Laravel 5 - ErrorException failed to open stream: Permission denied

I've just git clone a repository of mine containing a Laravel 5.1 project. I've gone through the normal steps to get it up and running (setup the webserver, db, etc). I've now gone to the web address I configured and i'm getting the following error message:

ErrorException in compiled.php line 6648:
file_put_contents(/3c7922efc24ab13620cd0f35b1fdaa61): failed to open stream: Permission denied

Any idea's what folder it's trying to access?

via Chebli Mohamed