Cant create c++ project

I hit similar problem in past, try creating empty log file in Saved/Log (ProjectName.log) in your project directory. Project actually was made but it you can not open it due ot this error.

Hi there, I have a problem creating a new c++ project. First I need to say I didn’t install the launcher I just executing the editor from …/binaries/64.
I have this error

an error occurred while trying to generate project files.running c:/program files/epic games/ue_4.21/engine/binaries/dotnet/unrealbuildtool.exe -projectfiles -game -rocket -progresserror: unrealbuildtool exception: unable to open log file for writing

See if the directory where your Unreal is installed has restrictions. You might need to give admin write permissions to that directory. The UnrealBuildTool needs these permission to compile files.

Thanks all, this was the solution

This may also be fixed by running Verify (from the launcher) on your UE4 install.

But how can i do that can you please tell me please and thank you?