Error in render: "TypeError: Cannot read properties of undefined (reading 'isUnifiedViewer')

[wenlongchen1247258316]

装的版本是1.9.0

main.js 里加了两行
import CodeDiff from 'v-code-diff'
Vue.use(CodeDiff)
页面里加的如下代码

运行的时候报错：
vue.esm.js:629 [Vue warn]: Error in render: "TypeError: Cannot read properties of undefined (reading 'isUnifiedViewer')"
found in
--->
at packages/dialog/src/component.vue
at src/views/demos/ApiDemoDiffTask.vue
at packages/main/src/main.vue
at packages/container/src/main.vue... (1 recursive calls)
at src/App.vue
vue.esm.js:1905 TypeError: Cannot read properties of undefined (reading 'isUnifiedViewer')
at Proxy.mr (index.es.js:5125:185)
at Vue._render (vue.esm.js:3577:22)
at VueComponent.updateComponent (vue.esm.js:4089:21)
at Watcher.get (vue.esm.js:4503:25)
at new Watcher (vue.esm.js:4492:12)
at mountComponent (vue.esm.js:4096:3)
at Vue.$mount (vue.esm.js:9106:10)
at Vue.$mount (vue.esm.js:12021:16)
at init (vue.esm.js:3145:13)
at createComponent (vue.esm.js:6032:9)

[wenlongchen1247258316]

vue版本是2.9.6 麻烦帮忙看一下，是哪里出问题了呢

[Shimada666]

vue 没有 2.9.6 的版本，你检查下版本号。
另外错误是怎么触发的呢？可否提供下引用代码