Live Coding Failed

Hello everyone,

I am very new with programming and try to created a new code in my project, but time after time its failed, I don’t change anything on coding when I had created it. I what can I do ?
the massage I get:
---------- Creating patch ----------
Running C:\Program Files\Epic Games\UE_5.0\Engine\Binaries\DotNET\UnrealBuildTool\UnrealBuildTool.exe -Target=“NewWorldEditor Win64 Development -Project=”“D:/Documents/Unreal Projects/NewWorld/NewWorld.uproject”“” -LiveCoding -LiveCodingModules=“C:/Program Files/Epic Games/UE_5.0/Engine/Intermediate/LiveCodingModules.txt” -LiveCodingManifest=“C:/Program Files/Epic Games/UE_5.0/Engine/Intermediate/LiveCoding.json” -WaitMutex -LiveCodingLimit=100
Log file: C:\Users\User\AppData\Local\UnrealBuildTool\Log.txt
Creating makefile for NewWorldEditor (no existing makefile)
Parsing headers for NewWorldEditor
Running UnrealHeaderTool “D:\Documents\Unreal Projects\NewWorld\NewWorld.uproject” “D:\Documents\Unreal Projects\NewWorld\Intermediate\Build\Win64\NewWorldEditor\Development\NewWorldEditor.uhtmanifest” -LogCmds=“loginit warning, logexit warning, logdatabase error” -Unattended -WarningsAsErrors -abslog=“C:\Users\User\AppData\Local\UnrealBuildTool\Log_UHT.txt” -installed
D:/Documents/Unreal Projects/NewWorld/Source/NewWorld/Public/ITEM/ITEM.h(19): Error: Unknown function specifier ‘CPF_BlueprintCallable’
Build failed.

CPF_BlueprintCallable are for compilers that can’t use 64bit enums and generally give a compiler error. Do you have CPF_BlueprintCallable in your header file? Have you tried just using BlueprintCallable? Maybe you should list your ITEM.h source.