Netcode Issue(?)

[Magman3000]

Description

A clear and concise description of what the bug is.

Reproduce Steps

When Hosting
NullReferenceException: Object reference not set to an instance of an object
Unity.Netcode.ListSerializer1[T].Duplicate (System.Collections.Generic.List1[T]& value, System.Collections.Generic.List1[T]& duplicatedValue) (at ./Library/PackageCache/com.unity.netcode.gameobjects@bd2a018756ed/Runtime/NetworkVariable/Serialization/TypedSerializerImplementations.cs:344) Unity.Netcode.ListSerializer1[T].Unity.Netcode.INetworkVariableSerializer<System.Collections.Generic.List>.Duplicate (System.Collections.Generic.List1[T]& value, System.Collections.Generic.List1[T]& duplicatedValue) (at <638f8b09672547aea8c59a993b0e0e73>:0)
Unity.Netcode.NetworkVariableSerialization1[T].Duplicate (T& value, T& duplicatedValue) (at ./Library/PackageCache/com.unity.netcode.gameobjects@bd2a018756ed/Runtime/NetworkVariable/Serialization/NetworkVariableSerialization.cs:155) Unity.Netcode.NetworkVariable1[T].OnInitialize () (at ./Library/PackageCache/com.unity.netcode.gameobjects@bd2a018756ed/Runtime/NetworkVariable/NetworkVariable.cs:60)
Unity.Netcode.NetworkVariableBase.Initialize (Unity.Netcode.NetworkBehaviour networkBehaviour) (at ./Library/PackageCache/com.unity.netcode.gameobjects@bd2a018756ed/Runtime/NetworkVariable/NetworkVariableBase.cs:125)
Chat.__initializeVariables () (at <1c349474cc5642378be2cfec158ae21f>:0)
Unity.Netcode.NetworkBehaviour.InitializeVariables () (at ./Library/PackageCache/com.unity.netcode.gameobjects@bd2a018756ed/Runtime/Core/NetworkBehaviour.cs:1019)
Unity.Netcode.NetworkBehaviour.InternalOnNetworkSpawn () (at ./Library/PackageCache/com.unity.netcode.gameobjects@bd2a018756ed/Runtime/Core/NetworkBehaviour.cs:789)
Unity.Netcode.NetworkObject.InvokeBehaviourNetworkSpawn () (at ./Library/PackageCache/com.unity.netcode.gameobjects@bd2a018756ed/Runtime/Core/NetworkObject.cs:2566)
Unity.Netcode.NetworkSpawnManager.SpawnNetworkObjectLocallyCommon (Unity.Netcode.NetworkObject networkObject, System.UInt64 networkId, System.Boolean sceneObject, System.Boolean playerObject, System.UInt64 ownerClientId, System.Boolean destroyWithScene) (at ./Library/PackageCache/com.unity.netcode.gameobjects@bd2a018756ed/Runtime/Spawning/NetworkSpawnManager.cs:1197)
Unity.Netcode.NetworkSpawnManager.AuthorityLocalSpawn (Unity.Netcode.NetworkObject networkObject, System.UInt64 networkId, System.Boolean sceneObject, System.Boolean playerObject, System.UInt64 ownerClientId, System.Boolean destroyWithScene) (at ./Library/PackageCache/com.unity.netcode.gameobjects@bd2a018756ed/Runtime/Spawning/NetworkSpawnManager.cs:1093)
Unity.Netcode.NetworkSpawnManager.ServerSpawnSceneObjectsOnStartSweep () (at ./Library/PackageCache/com.unity.netcode.gameobjects@bd2a018756ed/Runtime/Spawning/NetworkSpawnManager.cs:1505)
Unity.Netcode.NetworkManager.HostServerInitialize () (at ./Library/PackageCache/com.unity.netcode.gameobjects@bd2a018756ed/Runtime/Core/NetworkManager.cs:1481)
Unity.Netcode.NetworkManager.StartHost () (at ./Library/PackageCache/com.unity.netcode.gameobjects@bd2a018756ed/Runtime/Core/NetworkManager.cs:1437)
UnityEngine.Debug:LogException(Exception)
Unity.Netcode.NetworkManager:StartHost() (at ./Library/PackageCache/com.unity.netcode.gameobjects@bd2a018756ed/Runtime/Core/NetworkManager.cs:1442)
Buttons:Host() (at Assets/Scripts/GameState/Buttons.cs:11)
UnityEngine.EventSystems.EventSystem:Update() (at ./Library/PackageCache/com.unity.ugui@f33505fcd0e6/Runtime/UGUI/EventSystem/EventSystem.cs:514)

When trying to join as a client
[Netcode] A ConnectionRequestMessage was received from the server on the client side. NetworkTransport: Unity.Netcode.Transports.UTP.UnityTransport UnityTransportProtocol: UnityTransport. This should not happen. Please report this to the Netcode for GameObjects team at https://github.com/Unity-Technologies/com.unity.netcode.gameobjects/issues and include the following data: Message Size: 170. Message Content: 02 02 7d 9a e2 a5 21 b2 36 17 b3 11 46 c4 ca 04 01 2a b2 f1 50 01 e9 3a b6 d2 01 39 3b e8 2c 01 ab c9 50 60 01 53 a3 38 44 21 d3 f6 1c b8 01 7f 10 0d af 01 f3 a2 4a 4a 01 a6 22 89 97 01 e9 4e 31 0d 01 b5 fe 01 74 11 be 97 be 73 01 bd 23 d8 d0 01 58 aa fb 1c 01 9d 9a 5c 01 01 e9 51 97 17 01 8a f7 e7 83 01 ee 80 1f c6 01 42 7f 88 c6 01 97 a3 f5 46 01 c2 40 2e a3 01 4e 67 03 d2 01 00 00 00 00 01 00 00 00 00 01 00 00 00 00 01 00 00 00 00 01 00 00 00 00 01 00 00 00 00 01 00 00 00 00 01 7b b0 63 b4 84 16 87 b7
UnityEngine.Debug:LogError (object)
Unity.Netcode.NetworkLog:LogError (string) (at ./Library/PackageCache/com.unity.netcode.gameobjects@bd2a018756ed/Runtime/Logging/NetworkLog.cs:34)
Unity.Netcode.NetworkManagerHooks:OnVerifyCanReceive (ulong,System.Type,Unity.Netcode.FastBufferReader,Unity.Netcode.NetworkContext&) (at ./Library/PackageCache/com.unity.netcode.gameobjects@bd2a018756ed/Runtime/Messaging/NetworkManagerHooks.cs:95)
Unity.Netcode.NetworkMessageManager:CanReceive (ulong,System.Type,Unity.Netcode.FastBufferReader,Unity.Netcode.NetworkContext&) (at ./Library/PackageCache/com.unity.netcode.gameobjects@bd2a018756ed/Runtime/Messaging/NetworkMessageManager.cs:315)
Unity.Netcode.NetworkMessageManager:HandleMessage (Unity.Netcode.NetworkMessageHeader&,Unity.Netcode.FastBufferReader,ulong,single,int) (at ./Library/PackageCache/com.unity.netcode.gameobjects@bd2a018756ed/Runtime/Messaging/NetworkMessageManager.cs:397)
Unity.Netcode.NetworkMessageManager:ProcessIncomingMessageQueue () (at ./Library/PackageCache/com.unity.netcode.gameobjects@bd2a018756ed/Runtime/Messaging/NetworkMessageManager.cs:448)
Unity.Netcode.NetworkManager:NetworkUpdate (Unity.Netcode.NetworkUpdateStage) (at ./Library/PackageCache/com.unity.netcode.gameobjects@bd2a018756ed/Runtime/Core/NetworkManager.cs:349)
Unity.Netcode.NetworkUpdateLoop:RunNetworkUpdateStage (Unity.Netcode.NetworkUpdateStage) (at ./Library/PackageCache/com.unity.netcode.gameobjects@bd2a018756ed/Runtime/Core/NetworkUpdateLoop.cs:191)
Unity.Netcode.NetworkUpdateLoop/NetworkEarlyUpdate/<>c:b__0_0 () (at ./Library/PackageCache/com.unity.netcode.gameobjects@bd2a018756ed/Runtime/Core/NetworkUpdateLoop.cs:214)

Actual Outcome

When hosting player spawns as normal, but when trying to make a build join as a client, it won't join.

Expected Outcome

To be able to join as a client.

Screenshots

If applicable, add screenshots to help explain your problem.

Environment

• OS: Windows
• Unity Version: 6000.2.3f1
• Netcode Version: 2.7.0 · October 31, 2025
• Netcode Commit: (com.unity.netcode.gameobjects) ??
• • Netcode Topology: [e.g. Client-Server, Distributed Authority, etc.]
    -Unity Transport: 2.6.0
    -Mono Cecil: 1.11.4

Additional Context

Add any other context about the problem here. Logs, code snippets would be useful here but please also consider attaching a minimal Unity project that reproduces the issue.

[EmandM]

Thanks for reporting this! Could you try updating to the latest version of Netcode for GameObjects (v2.10.0). There's a fix in that release that could resolve your issue.

[Magman3000]

Posting this to give reference to the slight shift in numbers due to the update.
NullReferenceException: Object reference not set to an instance of an object
Unity.Netcode.ListSerializer1[T].Duplicate (System.Collections.Generic.List1[T]& value, System.Collections.Generic.List1[T]& duplicatedValue) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/NetworkVariable/Serialization/TypedSerializerImplementations.cs:344) Unity.Netcode.ListSerializer1[T].Unity.Netcode.INetworkVariableSerializer<System.Collections.Generic.List>.Duplicate (System.Collections.Generic.List1[T]& value, System.Collections.Generic.List1[T]& duplicatedValue) (at <76fb2b6ce3064b70b1cc6a280f3a331a>:0)
Unity.Netcode.NetworkVariableSerialization1[T].Duplicate (T& value, T& duplicatedValue) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/NetworkVariable/Serialization/NetworkVariableSerialization.cs:155) Unity.Netcode.NetworkVariable1[T].OnInitialize () (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/NetworkVariable/NetworkVariable.cs:60)
Unity.Netcode.NetworkVariableBase.Initialize (Unity.Netcode.NetworkBehaviour networkBehaviour) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/NetworkVariable/NetworkVariableBase.cs:127)
Chat.__initializeVariables () (at :0)
Unity.Netcode.NetworkBehaviour.InitializeVariables () (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkBehaviour.cs:1134)
Unity.Netcode.NetworkBehaviour.InternalOnNetworkSpawn () (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkBehaviour.cs:802)
Unity.Netcode.NetworkObject.InvokeBehaviourNetworkSpawn () (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkObject.cs:2542)
Unity.Netcode.NetworkSpawnManager.SpawnNetworkObjectLocallyCommon (Unity.Netcode.NetworkObject networkObject, System.UInt64 networkId, System.Boolean sceneObject, System.Boolean playerObject, System.UInt64 ownerClientId, System.Boolean destroyWithScene) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Spawning/NetworkSpawnManager.cs:1208)
Unity.Netcode.NetworkSpawnManager.AuthorityLocalSpawn (Unity.Netcode.NetworkObject networkObject, System.UInt64 networkId, System.Boolean sceneObject, System.Boolean playerObject, System.UInt64 ownerClientId, System.Boolean destroyWithScene) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Spawning/NetworkSpawnManager.cs:1104)
Unity.Netcode.NetworkSpawnManager.ServerSpawnSceneObjectsOnStartSweep () (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Spawning/NetworkSpawnManager.cs:1507)
Unity.Netcode.NetworkManager.HostServerInitialize () (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkManager.cs:1511)
Unity.Netcode.NetworkManager.StartHost () (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkManager.cs:1466)
UnityEngine.Debug:LogException(Exception)
Unity.Netcode.NetworkManager:StartHost() (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkManager.cs:1471)
Buttons:Host() (at Assets/Scripts/GameState/Buttons.cs:11)
UnityEngine.EventSystems.EventSystem:Update() (at ./Library/PackageCache/com.unity.ugui@f33505fcd0e6/Runtime/UGUI/EventSystem/EventSystem.cs:514)

[Magman3000]

Client Connect Error message disappeared, joining as a client still doesn't work.

[EmandM]

Do you mind sharing more details about the problem. Are there any errors that are logged on the server or the client when the client joins?

Try setting your NetworkManager.LogLevel to LogLevel.Developer to see if that gives more detail to find the issue.

The second stack trace you have posted looks like there's a NetworkVariable containing a nested list where one of the nested list elements is set to null instead of a list.

[Magman3000]

Note that this is from an attempt to host and that no code of mine called shutdown

(Debug)[Netcode] StartHost
UnityEngine.Debug:Log (object)
Unity.Netcode.NetworkLog:LogInfo (string) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Logging/NetworkLog.cs:22)
Unity.Netcode.NetworkManager:StartHost () (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkManager.cs:1430)
Buttons:Host () (at Assets/Scripts/GameState/Buttons.cs:11)
UnityEngine.EventSystems.EventSystem:Update () (at ./Library/PackageCache/com.unity.ugui@f33505fcd0e6/Runtime/UGUI/EventSystem/EventSystem.cs:514)

(Debug)[Netcode] Initialize
UnityEngine.Debug:Log (object)
Unity.Netcode.NetworkLog:LogInfo (string) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Logging/NetworkLog.cs:22)
Unity.Netcode.NetworkManager:Initialize (bool) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkManager.cs:1184)
Unity.Netcode.NetworkManager:StartHost () (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkManager.cs:1445)
Buttons:Host () (at Assets/Scripts/GameState/Buttons.cs:11)
UnityEngine.EventSystems.EventSystem:Update () (at ./Library/PackageCache/com.unity.ugui@f33505fcd0e6/Runtime/UGUI/EventSystem/EventSystem.cs:514)

(Debug)[Netcode] [Server-Side] Pending Client-0 connection approved!
UnityEngine.Debug:Log (object)
Unity.Netcode.NetworkLog:LogInfo (string) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Logging/NetworkLog.cs:22)
Unity.Netcode.NetworkConnectionManager:HandleConnectionApproval (ulong,bool,System.Nullable1<uint>,System.Nullable1<UnityEngine.Vector3>,System.Nullable`1<UnityEngine.Quaternion>) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Connection/NetworkConnectionManager.cs:959)
Unity.Netcode.NetworkManager:HostServerInitialize () (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkManager.cs:1508)
Unity.Netcode.NetworkManager:StartHost () (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkManager.cs:1466)
Buttons:Host () (at Assets/Scripts/GameState/Buttons.cs:11)
UnityEngine.EventSystems.EventSystem:Update () (at ./Library/PackageCache/com.unity.ugui@f33505fcd0e6/Runtime/UGUI/EventSystem/EventSystem.cs:514)

(Error)NullReferenceException: Object reference not set to an instance of an object
Unity.Netcode.ListSerializer1[T].Duplicate (System.Collections.Generic.List1[T]& value, System.Collections.Generic.List1[T]& duplicatedValue) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/NetworkVariable/Serialization/TypedSerializerImplementations.cs:344) Unity.Netcode.ListSerializer1[T].Unity.Netcode.INetworkVariableSerializer<System.Collections.Generic.List>.Duplicate (System.Collections.Generic.List1[T]& value, System.Collections.Generic.List1[T]& duplicatedValue) (at <76fb2b6ce3064b70b1cc6a280f3a331a>:0)
Unity.Netcode.NetworkVariableSerialization1[T].Duplicate (T& value, T& duplicatedValue) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/NetworkVariable/Serialization/NetworkVariableSerialization.cs:155) Unity.Netcode.NetworkVariable1[T].OnInitialize () (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/NetworkVariable/NetworkVariable.cs:60)
Unity.Netcode.NetworkVariableBase.Initialize (Unity.Netcode.NetworkBehaviour networkBehaviour) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/NetworkVariable/NetworkVariableBase.cs:127)
Chat.__initializeVariables () (at :0)
Unity.Netcode.NetworkBehaviour.InitializeVariables () (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkBehaviour.cs:1134)
Unity.Netcode.NetworkBehaviour.InternalOnNetworkSpawn () (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkBehaviour.cs:802)
Unity.Netcode.NetworkObject.InvokeBehaviourNetworkSpawn () (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkObject.cs:2542)
Unity.Netcode.NetworkSpawnManager.SpawnNetworkObjectLocallyCommon (Unity.Netcode.NetworkObject networkObject, System.UInt64 networkId, System.Boolean sceneObject, System.Boolean playerObject, System.UInt64 ownerClientId, System.Boolean destroyWithScene) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Spawning/NetworkSpawnManager.cs:1208)
Unity.Netcode.NetworkSpawnManager.AuthorityLocalSpawn (Unity.Netcode.NetworkObject networkObject, System.UInt64 networkId, System.Boolean sceneObject, System.Boolean playerObject, System.UInt64 ownerClientId, System.Boolean destroyWithScene) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Spawning/NetworkSpawnManager.cs:1104)
Unity.Netcode.NetworkSpawnManager.ServerSpawnSceneObjectsOnStartSweep () (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Spawning/NetworkSpawnManager.cs:1507)
Unity.Netcode.NetworkManager.HostServerInitialize () (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkManager.cs:1511)
Unity.Netcode.NetworkManager.StartHost () (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkManager.cs:1466)
UnityEngine.Debug:LogException(Exception)
Unity.Netcode.NetworkManager:StartHost() (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkManager.cs:1471)
Buttons:Host() (at Assets/Scripts/GameState/Buttons.cs:11)
UnityEngine.EventSystems.EventSystem:Update() (at ./Library/PackageCache/com.unity.ugui@f33505fcd0e6/Runtime/UGUI/EventSystem/EventSystem.cs:514)

(Debug)[Netcode] ShutdownInternal
UnityEngine.Debug:Log (object)
Unity.Netcode.NetworkLog:LogInfo (string) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Logging/NetworkLog.cs:22)
Unity.Netcode.NetworkManager:ShutdownInternal () (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkManager.cs:1610)
Unity.Netcode.NetworkManager:StartHost () (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkManager.cs:1473)
Buttons:Host () (at Assets/Scripts/GameState/Buttons.cs:11)
UnityEngine.EventSystems.EventSystem:Update () (at ./Library/PackageCache/com.unity.ugui@f33505fcd0e6/Runtime/UGUI/EventSystem/EventSystem.cs:514)

(Warning)[Netcode] Trying to destroy object 0 but it doesn't seem to exist anymore!
UnityEngine.Debug:LogWarning (object)
Unity.Netcode.NetworkLog:LogWarning (string) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Logging/NetworkLog.cs:28)
Unity.Netcode.NetworkSpawnManager:OnDespawnObject (Unity.Netcode.NetworkObject,bool,bool) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Spawning/NetworkSpawnManager.cs:1576)
Unity.Netcode.NetworkSpawnManager:DespawnAndDestroyNetworkObjects () (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Spawning/NetworkSpawnManager.cs:1452)
Unity.Netcode.NetworkManager:ShutdownInternal () (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkManager.cs:1650)
Unity.Netcode.NetworkManager:StartHost () (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkManager.cs:1473)
Buttons:Host () (at Assets/Scripts/GameState/Buttons.cs:11)
UnityEngine.EventSystems.EventSystem:Update () (at ./Library/PackageCache/com.unity.ugui@f33505fcd0e6/Runtime/UGUI/EventSystem/EventSystem.cs:514)

(Debug)[Netcode] [Disconnect Event][Client-0][TransportClientId-0][TransportShutdown] NetworkConnectionManager was shutdown. The transport was shutdown.
UnityEngine.Debug:Log (object)
Unity.Netcode.NetworkLog:LogInfo (string) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Logging/NetworkLog.cs:22)
Unity.Netcode.NetworkConnectionManager:GenerateDisconnectInformation (ulong,ulong,string) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Connection/NetworkConnectionManager.cs:614)
Unity.Netcode.NetworkConnectionManager:Shutdown () (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Connection/NetworkConnectionManager.cs:1599)
Unity.Netcode.NetworkManager:ShutdownInternal () (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkManager.cs:1658)
Unity.Netcode.NetworkManager:StartHost () (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkManager.cs:1473)
Buttons:Host () (at Assets/Scripts/GameState/Buttons.cs:11)
UnityEngine.EventSystems.EventSystem:Update () (at ./Library/PackageCache/com.unity.ugui@f33505fcd0e6/Runtime/UGUI/EventSystem/EventSystem.cs:514)

(Warning)Directly calling UnityTransport.Shutdown() results in unexpected shutdown behaviour. All pending events will be lost. Use NetworkManager.Shutdown() instead.
UnityEngine.Debug:LogWarning (object)
Unity.Netcode.Transports.UTP.UnityTransport:Shutdown () (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Transports/UTP/UnityTransport.cs:1714)
Unity.Netcode.NetworkConnectionManager:Shutdown () (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Connection/NetworkConnectionManager.cs:1681)
Unity.Netcode.NetworkManager:ShutdownInternal () (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkManager.cs:1658)
Unity.Netcode.NetworkManager:StartHost () (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkManager.cs:1473)
Buttons:Host () (at Assets/Scripts/GameState/Buttons.cs:11)
UnityEngine.EventSystems.EventSystem:Update () (at ./Library/PackageCache/com.unity.ugui@f33505fcd0e6/Runtime/UGUI/EventSystem/EventSystem.cs:514)

(Debug)[Netcode] NetworkConnectionManager.Shutdown() -> IsListening && NetworkTransport != null -> NetworkTransport.Shutdown()
UnityEngine.Debug:Log (object)
Unity.Netcode.NetworkLog:LogInfo (string) (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Logging/NetworkLog.cs:22)
Unity.Netcode.NetworkConnectionManager:Shutdown () (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Connection/NetworkConnectionManager.cs:1684)
Unity.Netcode.NetworkManager:ShutdownInternal () (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkManager.cs:1658)
Unity.Netcode.NetworkManager:StartHost () (at ./Library/PackageCache/com.unity.netcode.gameobjects@c690afa8ab6e/Runtime/Core/NetworkManager.cs:1473)
Buttons:Host () (at Assets/Scripts/GameState/Buttons.cs:11)
UnityEngine.EventSystems.EventSystem:Update () (at ./Library/PackageCache/com.unity.ugui@f33505fcd0e6/Runtime/UGUI/EventSystem/EventSystem.cs:514)