我的index.html也导入了bootstrap.min.js文件和jQuery文件，关于bootstrap的样式都没有问题，可单单在chapter.vue文件点击新增的时候出现了这个问题。
样式都没有问题的，点击新增就出现这个问题，我都是按照老师的视频一步一步敲的
辛苦了老师，因为急着找工作，所有可能会有些烦

报错如下：
vue.runtime.esm.js?2b0e:619 [Vue warn]: Error in v-on handler: “TypeError: $(…).modal is not a function”

found in

—> at src/views/admin/chapter.vue
at src/views/admin.vue
at src/app.vue

warn @ vue.runtime.esm.js?2b0e:619
logError @ vue.runtime.esm.js?2b0e:1884
globalHandleError @ vue.runtime.esm.js?2b0e:1879
handleError @ vue.runtime.esm.js?2b0e:1839
invokeWithErrorHandling @ vue.runtime.esm.js?2b0e:1862
invoker @ vue.runtime.esm.js?2b0e:2179
original._wrapper @ vue.runtime.esm.js?2b0e:6917
vue.runtime.esm.js?2b0e:1888 TypeError: $(…).modal is not a function
at VueComponent.add (chapter.vue?4e6a:157)
at click (eval at ./node_modules/cache-loader/dist/cjs.js?{“cacheDirectory”:“node_modules/.cache/vue-loader”,“cacheIdentifier”:“0af812a7-vue-loader-template”}!./node_modules/vue-loader/lib/loaders/templateLoader.js?!./node_modules/cache-loader/dist/cjs.js?!./node_modules/vue-loader/lib/index.js?!./src/views/admin/chapter.vue?vue&type=template&id=1fa47763& (app.js:1034), :18:28)
at invokeWithErrorHandling (vue.runtime.esm.js?2b0e:1854)
at HTMLButtonElement.invoker (vue.runtime.esm.js?2b0e:2179)
at HTMLButtonElement.original._wrapper (vue.runtime.esm.js?2b0e:6917)
logError @ vue.runtime.esm.js?2b0e:1888
globalHandleError @ vue.runtime.esm.js?2b0e:1879
handleError @ vue.runtime.esm.js?2b0e:1839
invokeWithErrorHandling @ vue.runtime.esm.js?2b0e:1862
invoker @ vue.runtime.esm.js?2b0e:2179
original._wrapper @ vue.runtime.esm.js?2b0e:6917
192.168.43.45:8080/sockjs-node/info?t=1588599149053:1 Failed to load resource: net::ERR_CONNECTION_REFUSED
192.168.43.45:8080/sockjs-node/info?t=1588599154800:1 Failed to load resource: net::ERR_CONNECTION_REFUSED
192.168.43.45:8080/sockjs-node/info?t=1588599162789:1 Failed to load resource: net::ERR_CONNECTION_REFUSED
192.168.43.45:8080/sockjs-node/info?t=1588599555792:1 Failed to load resource: net::ERR_CONNECTION_REFUSED
192.168.43.45:8080/sockjs-node/info?t=1588599561798:1 Failed to load resource: net::ERR_CONNECTION_REFUSED
192.168.43.45:8080/sockjs-node/info?t=1588599569801:1 Failed to load resource: net::ERR_CONNECTION_REFUSED