app.js:259 TypeError: Cannot read property ‘post’ of undefined
at VueComponent.sendMsg (pages_register.58db472042bc579a1da5.hot-update.js:149)
at invokeWithErrorHandling (commons.app.js:12722)
at VueComponent.invoker (commons.app.js:13047)
at invokeWithErrorHandling (commons.app.js:12722)
at VueComponent.Vue.KaTeX parse error: Expected group after '_' at position 286: …t/client.js.vue_̲_WEBPACK_IMPORT…emit @ commons.app.js:14745
handleClick @ vendors.app.js:13468
invokeWithErrorHandling @ commons.app.js:12722
invoker @ commons.app.js:13047
original._wrapper @ commons.app.js:17770