fix tests

app/Services/Certificates/CertificateAdminService.php

@@ -4,7 +4,6 @@ declare(strict_types=1);
 
 namespace App\Services\Certificates;
 
-use App\Models\CertificateRecord;
 use App\Models\Configuration;
 use App\Models\StudentDecision;
 use Illuminate\Support\Facades\DB;
@@ -641,6 +640,7 @@ class CertificateAdminService
 
         if (preg_match('/grade\s*(\d+)/i', $name, $matches) === 1) {
             $grade = (int) $matches[1];
+
             return [
                 'Grade '.$grade,
                 '1_'.str_pad((string) $grade, 3, '0', STR_PAD_LEFT),