Fatal error: Uncaught Error: Interface 'Illuminate\Contracts\Validation\ValidationRule' not found in /home/nextgenc/shieldlink.app/inventory/app/Rules/UserCannotSwitchCompaniesIfItemsAssigned.php:9 Stack trace: #0 {main} thrown in /home/nextgenc/shieldlink.app/inventory/app/Rules/UserCannotSwitchCompaniesIfItemsAssigned.php on line 9