我有一个在本地运行的Rails应用程序。当我将其部署到heroku并尝试查看时，页面只是白色，在开发控制台中看到错误：
"TypeError: o is not a function
at e (application-3cf416d1f738bfa0c9751b6f067d24ba462ae0d1fd10b7551c9f996491da5fbb.js:formatted:1134)
at i (application-3cf416d1f738bfa0c9751b6f067d24ba462ae0d1fd10b7551c9f996491da5fbb.js:formatted:1085)
at Object.merge (application-3cf416d1f738bfa0c9751b6f067d24ba462ae0d1fd10b7551c9f996491da5fbb.js:formatted:1137)
at o.request (application-3cf416d1f738bfa0c9751b6f067d24ba462ae0d1fd10b7551c9f996491da5fbb.js:formatted:3919)
at o.(/anonymous function) [as get] (https://syndicatorproto.herokuapp.com/assets/application-3cf416d1f738bfa0c9751b6f067d24ba462ae0d1fd10b7551c9f996491da5fbb.js:3:12554)
at Function.get (application-3cf416d1f738bfa0c9751b6f067d24ba462ae0d1fd10b7551c9f996491da5fbb.js:formatted:2218)
at n.value (application-3cf416d1f738bfa0c9751b6f067d24ba462ae0d1fd10b7551c9f996491da5fbb.js:formatted:8652)
at er (application-3cf416d1f738bfa0c9751b6f067d24ba462ae0d1fd10b7551c9f996491da5fbb.js:formatted:12162)
at Jn (application-3cf416d1f738bfa0c9751b6f067d24ba462ae0d1fd10b7551c9f996491da5fbb.js:formatted:11938)
at Qn (application-3cf416d1f738bfa0c9751b6f067d24ba462ae0d1fd10b7551c9f996491da5fbb.js:formatted:11899)"
我不知道这个错误是什么，有人知道吗？ Heroku日志未显示错误。