Fix for insertBatch issue #888

[evil1]

Q	A
Is bugfix?	✔️
New feature?	❌
Breaks BC?	❌
Fixed issues	#888

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.88%. Comparing base (07ec536) to head (f5fda42).
⚠️ Report is 85 commits behind head on master.

Additional details and impacted files

@@ Coverage Diff @@## master #398 +/- ##
=========================================
Coverage 99.88% 99.88% Complexity 274 274 =========================================
Files 33 33 Lines 844 844 =========================================
Hits 843 843 Misses 1 1 

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