Can retrieve room media

matrixgw_backend/src/controllers/matrix/matrix_room_controller.rs

@@ -111,5 +111,5 @@ pub async fn room_avatar(
         return Ok(HttpResponse::NotFound().json("Room has no avatar"));
     };
 
-    matrix_media_controller::serve_media(req, uri).await
+    matrix_media_controller::serve_mxc_file(req, uri).await
 }