FleX branch crashing with a failed assertion from 2KNode

I created a custom blueprint function to save some data to a file in C++ (because Rama’s Victory Plugin isn’t supported in the FleX branch). I’m getting no errors involved with the function itself and the project builds perfectly fine, but when I try to open the editor, it crashed with an “Assertion failed: NewOperatorInputA” then specifies line 287 in the 2KNode_CommunitativeAssociativeBinaryOperator.cpp file. After rebuilding the engine, it switched to a fatal error.

This is the crash report that I get.

192311-crash+report.jpg

Any ideas?

UPDATE: I reverted a few changes and it’s back to the failed assertion crash, but I’m still lost as to why…
Crash Report:

192313-crash+report.jpg