LangGraph Integration: TypeError: Cannot read properties of null (reading 'messages') #19353

Closed
#19374
Closed
LangGraph Integration: TypeError: Cannot read properties of null (reading 'messages')#19353
#19374
Labels
BugNode.js

Description

@jadengis
jadengis
opened on Feb 16, 2026

Is there an existing issue for this?

How do you use Sentry?

Sentry Saas (sentry.io)

Which SDK are you using?

@sentry/node

SDK Version

10.38

Framework Version

No response

Link to Sentry event

https://underflow.sentry.io/issues/7260163588/?project=4510575266824192&query=is%3Aunresolved&referrer=issue-stream

Reproduction Example/SDK Setup

The LangGraph docs ask you to pass null as the first argument to graph.invoke when resuming the graph from a checkpoint. See here: https://docs.langchain.com/oss/javascript/langgraph/use-functional-api#resuming-after-an-error

awaitmain.invoke(null,config);

However, @sentry/core incorrectly assumes that arg[0] is not-null, see here: https://github.com/getsentry/sentry-javascript/blob/develop/packages/core/src/tracing/langgraph/index.ts#L138.

// Parse input messagesconstrecordInputs=options.recordInputs;constrecordOutputs=options.recordOutputs;constinputMessages=args.length>0 ? ((args[0]as{messages?: LangChainMessage[]}).messages??[]) : [];

This causes an error for resume on error, breaking the langgraph resume functionality, or force me to disable the langgraph API.

Steps to Reproduce

Attempt to resume a langgraph according to the docs main.invoke(null, config) with Sentry auto-instrumentation enabled.

Expected Result

No error on resume.

Actual Result

And error occurs.

Additional Context

No response

Priority

React with 👍 to help prioritize this issue. Please use comments to provide useful context, avoiding +1 or me too, to help us triage it.

Activity

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

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    , 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
     blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

    Skip to content
    LangGraph Integration: TypeError: Cannot read properties of null (reading 'messages') #19353
    Closed
    #19374
    Closed
    LangGraph Integration: TypeError: Cannot read properties of null (reading 'messages')#19353
    #19374
    Labels
    BugNode.js
    Description
    @jadengis
    jadengis
    opened on Feb 16, 2026
    Is there an existing issue for this?
    How do you use Sentry?
    Sentry Saas (sentry.io)
    Which SDK are you using?
    @sentry/node
    SDK Version
    10.38
    Framework Version
    No response
    Link to Sentry event
    https://underflow.sentry.io/issues/7260163588/?project=4510575266824192&query=is%3Aunresolved&referrer=issue-stream
    Reproduction Example/SDK Setup
    The LangGraph docs ask you to pass null as the first argument to graph.invoke when resuming the graph from a checkpoint. See here: https://docs.langchain.com/oss/javascript/langgraph/use-functional-api#resuming-after-an-error
    awaitmain.invoke(null,config);
    However, @sentry/core incorrectly assumes that arg[0] is not-null, see here: https://github.com/getsentry/sentry-javascript/blob/develop/packages/core/src/tracing/langgraph/index.ts#L138.
    // Parse input messagesconstrecordInputs=options.recordInputs;constrecordOutputs=options.recordOutputs;constinputMessages=args.length>0 ? ((args[0]as{messages?: LangChainMessage[]}).messages??[]) : [];
    This causes an error for resume on error, breaking the langgraph resume functionality, or force me to disable the langgraph API.
    Steps to Reproduce
    Attempt to resume a langgraph according to the docs main.invoke(null, config) with Sentry auto-instrumentation enabled.
    Expected Result
    No error on resume.
    Actual Result
    And error occurs.
    Additional Context
    No response
    Priority
    React with 👍 to help prioritize this issue. Please use comments to provide useful context, avoiding +1 or me too, to help us triage it.
    Activity
    Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
    Metadata
    Metadata
    Assignees
    No one assigned
      Labels
      BugNode.js
      Projects
      Milestone
      No milestone
      Relationships
      None yet
      Development
      No branches or pull requests
      Issue actions
      
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

      Skip to content
      LangGraph Integration: TypeError: Cannot read properties of null (reading 'messages') #19353
      Closed
      #19374
      Closed
      LangGraph Integration: TypeError: Cannot read properties of null (reading 'messages')#19353
      #19374
      Labels
      BugNode.js
      Description
      @jadengis
      jadengis
      opened on Feb 16, 2026
      Is there an existing issue for this?
      How do you use Sentry?
      Sentry Saas (sentry.io)
      Which SDK are you using?
      @sentry/node
      SDK Version
      10.38
      Framework Version
      No response
      Link to Sentry event
      https://underflow.sentry.io/issues/7260163588/?project=4510575266824192&query=is%3Aunresolved&referrer=issue-stream
      Reproduction Example/SDK Setup
      The LangGraph docs ask you to pass null as the first argument to graph.invoke when resuming the graph from a checkpoint. See here: https://docs.langchain.com/oss/javascript/langgraph/use-functional-api#resuming-after-an-error
      awaitmain.invoke(null,config);
      However, @sentry/core incorrectly assumes that arg[0] is not-null, see here: https://github.com/getsentry/sentry-javascript/blob/develop/packages/core/src/tracing/langgraph/index.ts#L138.
      // Parse input messagesconstrecordInputs=options.recordInputs;constrecordOutputs=options.recordOutputs;constinputMessages=args.length>0 ? ((args[0]as{messages?: LangChainMessage[]}).messages??[]) : [];
      This causes an error for resume on error, breaking the langgraph resume functionality, or force me to disable the langgraph API.
      Steps to Reproduce
      Attempt to resume a langgraph according to the docs main.invoke(null, config) with Sentry auto-instrumentation enabled.
      Expected Result
      No error on resume.
      Actual Result
      And error occurs.
      Additional Context
      No response
      Priority
      React with 👍 to help prioritize this issue. Please use comments to provide useful context, avoiding +1 or me too, to help us triage it.
      Activity
      Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
      Metadata
      Metadata
      Assignees
      No one assigned
        Labels
        BugNode.js
        Projects
        Milestone
        No milestone
        Relationships
        None yet
        Development
        No branches or pull requests
        Issue actions
        
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

        Skip to content
        LangGraph Integration: TypeError: Cannot read properties of null (reading 'messages') #19353
        Closed
        #19374
        Closed
        LangGraph Integration: TypeError: Cannot read properties of null (reading 'messages')#19353
        #19374
        Labels
        BugNode.js
        Description
        @jadengis
        jadengis
        opened on Feb 16, 2026
        Is there an existing issue for this?
        How do you use Sentry?
        Sentry Saas (sentry.io)
        Which SDK are you using?
        @sentry/node
        SDK Version
        10.38
        Framework Version
        No response
        Link to Sentry event
        https://underflow.sentry.io/issues/7260163588/?project=4510575266824192&query=is%3Aunresolved&referrer=issue-stream
        Reproduction Example/SDK Setup
        The LangGraph docs ask you to pass null as the first argument to graph.invoke when resuming the graph from a checkpoint. See here: https://docs.langchain.com/oss/javascript/langgraph/use-functional-api#resuming-after-an-error
        awaitmain.invoke(null,config);
        However, @sentry/core incorrectly assumes that arg[0] is not-null, see here: https://github.com/getsentry/sentry-javascript/blob/develop/packages/core/src/tracing/langgraph/index.ts#L138.
        // Parse input messagesconstrecordInputs=options.recordInputs;constrecordOutputs=options.recordOutputs;constinputMessages=args.length>0 ? ((args[0]as{messages?: LangChainMessage[]}).messages??[]) : [];
        This causes an error for resume on error, breaking the langgraph resume functionality, or force me to disable the langgraph API.
        Steps to Reproduce
        Attempt to resume a langgraph according to the docs main.invoke(null, config) with Sentry auto-instrumentation enabled.
        Expected Result
        No error on resume.
        Actual Result
        And error occurs.
        Additional Context
        No response
        Priority
        React with 👍 to help prioritize this issue. Please use comments to provide useful context, avoiding +1 or me too, to help us triage it.
        Activity
        Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
        Metadata
        Metadata
        Assignees
        No one assigned
          Labels
          BugNode.js
          Projects
          Milestone
          No milestone
          Relationships
          None yet
          Development
          No branches or pull requests
          Issue actions
          
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

          Skip to content
          LangGraph Integration: TypeError: Cannot read properties of null (reading 'messages') #19353
          Closed
          #19374
          Closed
          LangGraph Integration: TypeError: Cannot read properties of null (reading 'messages')#19353
          #19374
          Labels
          BugNode.js
          Description
          @jadengis
          jadengis
          opened on Feb 16, 2026
          Is there an existing issue for this?
          How do you use Sentry?
          Sentry Saas (sentry.io)
          Which SDK are you using?
          @sentry/node
          SDK Version
          10.38
          Framework Version
          No response
          Link to Sentry event
          https://underflow.sentry.io/issues/7260163588/?project=4510575266824192&query=is%3Aunresolved&referrer=issue-stream
          Reproduction Example/SDK Setup
          The LangGraph docs ask you to pass null as the first argument to graph.invoke when resuming the graph from a checkpoint. See here: https://docs.langchain.com/oss/javascript/langgraph/use-functional-api#resuming-after-an-error
          awaitmain.invoke(null,config);
          However, @sentry/core incorrectly assumes that arg[0] is not-null, see here: https://github.com/getsentry/sentry-javascript/blob/develop/packages/core/src/tracing/langgraph/index.ts#L138.
          // Parse input messagesconstrecordInputs=options.recordInputs;constrecordOutputs=options.recordOutputs;constinputMessages=args.length>0 ? ((args[0]as{messages?: LangChainMessage[]}).messages??[]) : [];
          This causes an error for resume on error, breaking the langgraph resume functionality, or force me to disable the langgraph API.
          Steps to Reproduce
          Attempt to resume a langgraph according to the docs main.invoke(null, config) with Sentry auto-instrumentation enabled.
          Expected Result
          No error on resume.
          Actual Result
          And error occurs.
          Additional Context
          No response
          Priority
          React with 👍 to help prioritize this issue. Please use comments to provide useful context, avoiding +1 or me too, to help us triage it.
          Activity
          Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
          Metadata
          Metadata
          Assignees
          No one assigned
            Labels
            BugNode.js
            Projects
            Milestone
            No milestone
            Relationships
            None yet
            Development
            No branches or pull requests
            Issue actions
            
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

            Skip to content
            LangGraph Integration: TypeError: Cannot read properties of null (reading 'messages') #19353
            Closed
            #19374
            Closed
            LangGraph Integration: TypeError: Cannot read properties of null (reading 'messages')#19353
            #19374
            Labels
            BugNode.js
            Description
            @jadengis
            jadengis
            opened on Feb 16, 2026
            Is there an existing issue for this?
            How do you use Sentry?
            Sentry Saas (sentry.io)
            Which SDK are you using?
            @sentry/node
            SDK Version
            10.38
            Framework Version
            No response
            Link to Sentry event
            https://underflow.sentry.io/issues/7260163588/?project=4510575266824192&query=is%3Aunresolved&referrer=issue-stream
            Reproduction Example/SDK Setup
            The LangGraph docs ask you to pass null as the first argument to graph.invoke when resuming the graph from a checkpoint. See here: https://docs.langchain.com/oss/javascript/langgraph/use-functional-api#resuming-after-an-error
            awaitmain.invoke(null,config);
            However, @sentry/core incorrectly assumes that arg[0] is not-null, see here: https://github.com/getsentry/sentry-javascript/blob/develop/packages/core/src/tracing/langgraph/index.ts#L138.
            // Parse input messagesconstrecordInputs=options.recordInputs;constrecordOutputs=options.recordOutputs;constinputMessages=args.length>0 ? ((args[0]as{messages?: LangChainMessage[]}).messages??[]) : [];
            This causes an error for resume on error, breaking the langgraph resume functionality, or force me to disable the langgraph API.
            Steps to Reproduce
            Attempt to resume a langgraph according to the docs main.invoke(null, config) with Sentry auto-instrumentation enabled.
            Expected Result
            No error on resume.
            Actual Result
            And error occurs.
            Additional Context
            No response
            Priority
            React with 👍 to help prioritize this issue. Please use comments to provide useful context, avoiding +1 or me too, to help us triage it.
            Activity
            Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
            Metadata
            Metadata
            Assignees
            No one assigned
              Labels
              BugNode.js
              Projects
              Milestone
              No milestone
              Relationships
              None yet
              Development
              No branches or pull requests
              Issue actions
              
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

              Skip to content
              LangGraph Integration: TypeError: Cannot read properties of null (reading 'messages') #19353
              Closed
              #19374
              Closed
              LangGraph Integration: TypeError: Cannot read properties of null (reading 'messages')#19353
              #19374
              Labels
              BugNode.js
              Description
              @jadengis
              jadengis
              opened on Feb 16, 2026
              Is there an existing issue for this?
              How do you use Sentry?
              Sentry Saas (sentry.io)
              Which SDK are you using?
              @sentry/node
              SDK Version
              10.38
              Framework Version
              No response
              Link to Sentry event
              https://underflow.sentry.io/issues/7260163588/?project=4510575266824192&query=is%3Aunresolved&referrer=issue-stream
              Reproduction Example/SDK Setup
              The LangGraph docs ask you to pass null as the first argument to graph.invoke when resuming the graph from a checkpoint. See here: https://docs.langchain.com/oss/javascript/langgraph/use-functional-api#resuming-after-an-error
              awaitmain.invoke(null,config);
              However, @sentry/core incorrectly assumes that arg[0] is not-null, see here: https://github.com/getsentry/sentry-javascript/blob/develop/packages/core/src/tracing/langgraph/index.ts#L138.
              // Parse input messagesconstrecordInputs=options.recordInputs;constrecordOutputs=options.recordOutputs;constinputMessages=args.length>0 ? ((args[0]as{messages?: LangChainMessage[]}).messages??[]) : [];
              This causes an error for resume on error, breaking the langgraph resume functionality, or force me to disable the langgraph API.
              Steps to Reproduce
              Attempt to resume a langgraph according to the docs main.invoke(null, config) with Sentry auto-instrumentation enabled.
              Expected Result
              No error on resume.
              Actual Result
              And error occurs.
              Additional Context
              No response
              Priority
              React with 👍 to help prioritize this issue. Please use comments to provide useful context, avoiding +1 or me too, to help us triage it.
              Activity
              Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
              Metadata
              Metadata
              Assignees
              No one assigned
                Labels
                BugNode.js
                Projects
                Milestone
                No milestone
                Relationships
                None yet
                Development
                No branches or pull requests
                Issue actions
                
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

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                LangGraph Integration: TypeError: Cannot read properties of null (reading 'messages') #19353
                Closed
                #19374
                Closed
                LangGraph Integration: TypeError: Cannot read properties of null (reading 'messages')#19353
                #19374
                Labels
                BugNode.js
                Description
                @jadengis
                jadengis
                opened on Feb 16, 2026
                Is there an existing issue for this?
                How do you use Sentry?
                Sentry Saas (sentry.io)
                Which SDK are you using?
                @sentry/node
                SDK Version
                10.38
                Framework Version
                No response
                Link to Sentry event
                https://underflow.sentry.io/issues/7260163588/?project=4510575266824192&query=is%3Aunresolved&referrer=issue-stream
                Reproduction Example/SDK Setup
                The LangGraph docs ask you to pass null as the first argument to graph.invoke when resuming the graph from a checkpoint. See here: https://docs.langchain.com/oss/javascript/langgraph/use-functional-api#resuming-after-an-error
                awaitmain.invoke(null,config);
                However, @sentry/core incorrectly assumes that arg[0] is not-null, see here: https://github.com/getsentry/sentry-javascript/blob/develop/packages/core/src/tracing/langgraph/index.ts#L138.
                // Parse input messagesconstrecordInputs=options.recordInputs;constrecordOutputs=options.recordOutputs;constinputMessages=args.length>0 ? ((args[0]as{messages?: LangChainMessage[]}).messages??[]) : [];
                This causes an error for resume on error, breaking the langgraph resume functionality, or force me to disable the langgraph API.
                Steps to Reproduce
                Attempt to resume a langgraph according to the docs main.invoke(null, config) with Sentry auto-instrumentation enabled.
                Expected Result
                No error on resume.
                Actual Result
                And error occurs.
                Additional Context
                No response
                Priority
                React with 👍 to help prioritize this issue. Please use comments to provide useful context, avoiding +1 or me too, to help us triage it.
                Activity
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