Error: Fail to Launch the Project

Hello,
I am having issue with Launching the project from the toolbar. After i click ‘Launch this Level on _____’, it process for a while and i get the same error across all my projects, ‘Build Failed’, even an empty project. => PackagingResults:Error: Error Launch failed! Unknown Error.

The warning in yellow colour says:
"LogStats:Warning: MetaData mismatch. Did you assign a stat to two groups? "

I’ve attached the error log, and i dont know whats causing this. Any help would be great.