My Project crashes when I open it: Assertion failed: (Index >= 0) & (Index < ArrayNum)

The whole error is LoginId:a0f1a64c4d6f87598899f588a6f026f5

Assertion failed: (Index >= 0) & (Index < ArrayNum) [File:D:\Build++UE4\Sync\Engine\Source\Runtime\Core\Public\Containers/Array.h] [Line: 703] Array index out of bounds: -1 from an array of size 184. I also send it so somebody might help me. Because I don’t know what the xml is trying to point out and how i am supposed to solve the crashes when i can’t even open the project. Please anyone help