ErrorException in Filesystem.php
If you use Laravel 5.2.0 you've probably ignored the storage folder in the .gitignore file. The thing is that when you run composer install on your server not all the files from the storage folder are created, you should check those !
In my case my storage folder contained only the logs folder without app and framework folders. You need to create those manually so you should have this structure at the end:
storage - app - framework - cache - sessions - views - logsDon't forget to make the storage folder writable !