fix photo module

kernel/app_modules/photo/services/PhotoService.php

@@ -31,4 +31,10 @@ class PhotoService
         return false;
     }
 
+    public static function getByEntity(string $entity, int $entity_id): string
+    {
+        $photo = Photo::where("entity", $entity)->where("entity_id", $entity_id)->first();
+        return $photo->image ?? "";
+    }
+
 }