window.$Message undefined

[muxik]

我按照README 的指示配置好了一切，但是为什么用不了

Version: Vue cli 2.6

[muxik]

index.js?d99d:1 Uncaught TypeError: Cannot read property 'content' of null
at eval (index.js?d99d:1)
at Array.forEach ()
at eval (index.js?d99d:1)
at Object.a.install (index.js?d99d:1)
at Function.Vue.use (vue.runtime.esm.js?2b0e:5107)
at eval (main.js?56d7:7)
at Module../src/main.js (app.js:1111)
at webpack_require (app.js:849)
at fn (app.js:151)
at Object.1 (app.js:1184)