Fatal error: Uncaught Error: Interface "Illuminate\Contracts\Validation\ValidationRule" not found in D:\programs\xampp\htdocs\backend-test\app\Rules\UniqueRuleWithDeletedAt.php:9 Stack trace: #0 {main} thrown in D:\programs\xampp\htdocs\backend-test\app\Rules\UniqueRuleWithDeletedAt.php on line 9