An Unreal process has crashed : UE4-TS2Prototype

My game just crash and is not the first time… 9 time crash… I dot know what to do…Please help me
This is the crash raport:

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://forums.unrealengine.com/unreal-engine/announcements-and-releases/1410408-unreal-engine-bug-submission-form

Thanks