missing ->withTimestamps()

src/Models/Administrator.php

@@ -73,7 +73,7 @@ class Administrator extends Model implements AuthenticatableContract
 
         $relatedModel = config('admin.database.roles_model');
 
-        return $this->belongsToMany($relatedModel, $pivotTable, 'user_id', 'role_id');
+        return $this->belongsToMany($relatedModel, $pivotTable, 'user_id', 'role_id')->withTimestamps();
     }
 
     /**