Ue4.21 android version crash at launch

ue4.21 android version crash at launch
i try to solve it for a week, but failed!
please help me!

the apk is built as Debug configuration
crash at any android phone in launching

callstack shown in picture as followed.

(source code is modified a little by me, to find wich variable cause the assert failed)

Hello,

We’ve recently made a switch to a new bug reporting method using a more structured form. Please visit the link below for more details and report the issue using the new Bug Submission Form. Feel free to continue to use this thread for community discussion around the issue.

https://epicsupport.force.com/unrealengine/s/

Thanks