Fatal error: Uncaught Error: Interface "Illuminate\Contracts\Validation\Rule" not found in /home/app/htdocs/truebits.docker.installations/invoice-crater/docker.app/crater/app/Rules/RelationNotExist.php:7 Stack trace: #0 {main} thrown in /home/app/htdocs/truebits.docker.installations/invoice-crater/docker.app/crater/app/Rules/RelationNotExist.php on line 7