unreal engine project keeps crashing when opening

Development Platform & Builds Debugging, Optimization, & Profiling
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1

so whenever I try to open my project.

Assertion failed: NumBytes == Strings.Num() [File:D:/Build/++UE4/Sync/Engine/Source/Runtime/Core/Private/UObject/UnrealNames.cpp] [Line: 3357]

UE4Editor_Core
UE4Editor_Core
UE4Editor_Core
UE4Editor_Core
UE4Editor_Core
UE4Editor_AssetRegistry
UE4Editor_AssetRegistry
UE4Editor_Core
UE4Editor_Core
kernel32
ntdll

this is what is written on a black screen when crash occurs.

what should I do? please help

2

First thing you should do is download debug symbols so that you get proper stack traces in crash logs.

803d8cb05c929f433a3233d62a0783336c140015
803d8cb05c929f433a3233d62a0783336c1400151536×619 81.2 KB

Try to open the project again after that. The crash log should contain more information now.

3

I finally got this fixed by deleting CachedAssetRegistry.bin from both

C:\Users\<user>\AppData\Local\UnrealEngine\4.27\Intermediate

and

<project directory>/Intermediate