After move lavarel 5.1 application for digital ocean i get the error ! 'App\Exceptions\Mail' not found

Hi,

After i change my application of hosting i get this error , can anyone help please ?

2016/04/01 09:29:23 [error] 9176#0: *5 FastCGI sent in stderr: "PHP message: PHP Fatal error:  Class 'App\Exceptions\Mail' not found in /var/www/myproject/app/Exceptions/Handler_.php on line 37
PHP message: PHP Fatal error:  Class 'App\Exceptions\Mail' not found in /var/www/myapp/app/Exceptions/Handler_.php on line 37" while reading response header from upstream, client: 94.61.41.56, server: myproject.pt, request: "GET / HTTP/1.1", upstream: "fastcgi://unix:/var/run/php5-fpm.sock:", host: "rhcode.codeline.pt"

via Chebli Mohamed