C++ GameplayEffect Error

I encountered a fatal problem. My GE files cannot be compiled. I recreated a project but failed to solve the problem.
This is what happened:
I wrote constructors for several GE structures, and then the problem occurred. I always reported the following problems:; I have nearly restored the modified code, but the problem remains.
The error is as follows:

Severity Code Description Project File Line Suppress Status
Error C3861 “FActiveGameplayEffectQueryCustomMatch_Dynamic_DelegateWrapper”: Cannot find identifier TTTT
…\Public\GameplayEffect.h 1339 (Error * 2)

Severity Code Description Project File Line Suppress Status
Error (Activity) E0077 This declaration has no storage class or type specifier UE4
…\Public\GameplayEffect.h 1435 (Error * very lot)

Severity Code Description Project File Line Suppress Status
Error C4430 missing type specifier - int assumed. Note: C++does not support the default int TTTT
…\Public\GameplayEffect.h 1519 (Error * very lot)


I had a discussion, but his method did not solve my problem;
< DECLARE_DYNAMIC_DELEGATE_ThreeParams() Error>

If there is no way, is there a way to reset the whole GAS?

I copied the source code on GitHub, but the problem remains unsolved;
error code:
Error C2664 ‘UGameplayEffect:: UGameplayEffect (const UGameplayEffect&)’: Cannot convert parameter 1 from ‘const FObjectInitializer’ to ‘const UGameplayEffect&’
Error C2143 Syntax error: missing ‘;’ (in front of “”)
* 4
Error C4430 Missing type specifier - int assumed. Note: C++does not support the default int
* n
Error MSB3073 The command “D: 3D Unreal engine UE_4.27 Engine Build BatchFiles Build. bat” TTTTEditor Win64 Development - Project=“E: Total project Ue Project TTTT TTTT. upproject” - WaitMutex - FromMsBuild "has exited with code 6.
Error C2664 ‘UGameplayEffect:: UGameplayEffect (const UGameplayEffect&)’: Cannot convert parameter 1 from ‘FVTableHelper’ to ‘const UGameplayEffect&’
Error C2664 ‘UGameplayEffect:: UGameplayEffect (const UGameplayEffect&)’: Cannot convert parameter 1 from ‘const FObjectInitializer’ to ‘const UGameplayEffect&’
Error C3861 ‘FActiveGameplayEffectQueryCustomMatch_Dynamic_DelegateWrapper’: identifier not found
Error C3861 ‘FActiveGameplayEffectQueryCustomMatch_Dynamic_DelegateWrapper’: identifier not found

This problem made me lose a lot of hair
I need help

I have reinstalled the engine, and the problem has been solved
//Remake UE :sweat_smile: