Plese Help me with this error

Summary

Assertion failed: this->FileSize > 0 [File:D:/Build/++UE4/Sync/Engine/Source/Runtime/Core/Private/FileCache/FileCache.cpp] [Line: 435]

Please select what you are reporting on:

Creative

What Type of Bug are you experiencing?

Other

Steps to Reproduce

Open .map

Expected Result

Should able to open

Observed Result

Assertion failed: this->FileSize > 0 [File:D:/Build/++UE4/Sync/Engine/Source/Runtime/Core/Private/FileCache/FileCache.cpp] [Line: 435]

Platform(s)

Assertion failed: this->FileSize > 0 [File:D:/Build/++UE4/Sync/Engine/Source/Runtime/Core/Private/FileCache/FileCache.cpp] [Line: 435]

Video

Assertion failed: this->FileSize > 0 [File:D:/Build/++UE4/Sync/Engine/Source/Runtime/Core/Private/FileCache/FileCache.cpp] [Line: 435]

Additional Notes

Assertion failed: this->FileSize > 0 [File:D:/Build/++UE4/Sync/Engine/Source/Runtime/Core/Private/FileCache/FileCache.cpp] [Line: 435]

UE 4 4.27.2