fix tests

app/Models/Stats.php

@@ -2,8 +2,6 @@
 
 namespace App\Models;
 
-use App\Models\BaseModel;
-
 class Stats extends BaseModel
 {
     protected $table = 'stats';
@@ -24,8 +22,8 @@ class Stats extends BaseModel
     protected $casts = [
         'students' => 'integer',
         'teachers' => 'integer',
-        'admins'   => 'integer',
-        'users'    => 'integer',
+        'admins' => 'integer',
+        'users' => 'integer',
     ];
 
     public function getFillable(): array
@@ -51,8 +49,8 @@ class Stats extends BaseModel
         return static::query()->first() ?? static::query()->create([
             'students' => 0,
             'teachers' => 0,
-            'admins'   => 0,
-            'users'    => 0,
+            'admins' => 0,
+            'users' => 0,
         ]);
     }
 
@@ -64,6 +62,7 @@ class Stats extends BaseModel
         $row = static::singleton();
         $row->fill($data);
         $row->save();
+
         return $row;
     }
 }