Null pointer exception in Packaged game, never in editor

I have a very persistent problem, which is that my packaged game hits a null pointer exception in 30% of playthroughs.
This happens within 30 seconds of a specific level transition.
The callstack for the exception is as follows:

I know nothing about these functions. Can anyone out there offer an insight as to where this callstack might have occured, either by explaining the purpose of these calls, or a method I can use to investigate it further?

The precise error I received was as follows:
“Exception thrown at 0x00007FF73D3DEDEC in Lost_City_of_Mer.exe: 0xC0000005: Access violation reading location 0xFFFFFFFFFFFFFFFF”
I assumed that this was a null pointer problem, but I’m including this in case I was wrong.

Is it shipping or development build, could you also check the log if there more info in there? There might be different behavior of things depending on build, when you use in editor game is kind of part of that editor so if you remove editor things might behave differently

Thank you for the response. It is a development build, and I’ll insert the log here. I couldn’t glean any useful information from it, but here’s hoping someone can.

I’ve included only the portion generated by UE on crash, as thousands of print statements clutter the log prior, which only tell us approximately when the crash occurred.