Fatal error: Uncaught Error: Interface 'Illuminate\Contracts\Validation\Rule' not found in /home/mattiapa/cloud2.mprnl.fr/owncloud/apps/files_external_dropbox/vendor/illuminate/contracts/Validation/ImplicitRule.php:5 Stack trace: #0 {main} thrown in /home/mattiapa/cloud2.mprnl.fr/owncloud/apps/files_external_dropbox/vendor/illuminate/contracts/Validation/ImplicitRule.php on line 5