TypeError: _utils__WEBPACK_IMPORTED_MODULE_7__.titleController.setRouteTitle is not a function

Question

出现这个错误怎么解决

[Vue warn]: Error in created hook (Promise/async): "TypeError: _utils__WEBPACK_IMPORTED_MODULE_7__.titleController.setRouteTitle is not a function"

found in

---> <Detail> at src/views/Blog/Detail.vue
       <Layout> at src/components/Layout/index.vue
         <App> at src/App.vue
           <Root>
warn @ vue.runtime.esm.js?2b0e:4544
vue.runtime.esm.js?2b0e:3006 TypeError: _utils__WEBPACK_IMPORTED_MODULE_7__.titleController.setRouteTitle is not a function
    at VueComponent.fetchData (Detail.vue?a2a1:41:1)
    at async VueComponent.created (fetchData.js?e128:29:1)

Answer 1

鼠标点一下这个，看看跳过去的地方是什么报错（一般跳过去光标会停留在错误的那一行代码上）