fix store request for road item

app/Http/Requests/V3/RoadItem/Operator/StoreRequest.php

@@ -6,8 +6,6 @@ use App\Models\Mission;
 use Carbon\Carbon;
 use Illuminate\Contracts\Validation\ValidationRule;
 use Illuminate\Foundation\Http\FormRequest;
-use Illuminate\Validation\Rule;
-use Illuminate\Validation\ValidationException;
 use Illuminate\Validation\Validator;
 
 class StoreRequest extends FormRequest
@@ -52,18 +50,24 @@ class StoreRequest extends FormRequest
             'activity_time' => 'ساعت فعالیت',
         ];
     }
+
     public function after(): array
     {
         return [
             function (Validator $validator) {
+
+                $mission = Mission::find($this->mission_id);
+                if (!$mission) {
+                    $validator->errors()->add('mission_id', 'مأموریت یافت نشد.');
+                    return;
+                }
                 $activityTime = Carbon::parse("{$this->activity_date} {$this->activity_time}");
 
-                if ($activityTime->lt($this->mission->start_date) || $activityTime->gt($this->mission->end_date)) {
+                if ($activityTime->lt($mission->start_date) || $activityTime->gt($mission->end_date)) {
                     $validator->errors()->add('activity_time', 'زمان گزارش باید بین بازه مأموریت باشد.');
                 }
             }
         ];
     }
 
-
 }