vue.runtime.esm.js?2b0e:619 [Vue warn]: Error in nextTick: “TypeError: Cannot read properties of und

vue使用vue-element-admin报错：

vue.runtime.esm.js?2b0e:619 [Vue warn]: Error in nextTick: "TypeError: Cannot read properties of undefined (reading 'key')"

vue.runtime.esm.js?2b0e:1888 TypeError: Cannot read properties of undefined (reading 'key')at checkDuplicateKeys (vue.runtime.esm.js?2b0e:6237:1)at createChildren (vue.runtime.esm.js?2b0e:6044:1)at createElm (vue.runtime.esm.js?2b0e:5948:1)at VueComponent.patch [as __patch__] (vue.runtime.esm.js?2b0e:6471:1)at Vue._update (vue.runtime.esm.js?2b0e:3939:1)at VueComponent.updateComponent (vue.runtime.esm.js?2b0e:4060:1)at Watcher.get (vue.runtime.esm.js?2b0e:4473:1)at new Watcher (vue.runtime.esm.js?2b0e:4462:1)at mountComponent (vue.runtime.esm.js?2b0e:4067:1)at Vue.$mount (vue.runtime.esm.js?2b0e:8409:1)

backend.js:2428 Uncaught TypeError: Cannot read properties of undefined (reading 'fnContext')at captureChild (backend.js:2428:13)at Array.map (<anonymous>)at capture (backend.js:2511:40)at Array.map (<anonymous>)at capture (backend.js:2505:8)at Array.map (<anonymous>)at capture (backend.js:2505:8)at Array.map (<anonymous>)at capture (backend.js:2505:8)at Array.map (<anonymous>)

原因是：

<el-paginationlayout="prev, pager, next":total="page.total":page-size="page.size":current-page="page.page"@current-change="currentChange">
</el-pagination>

其中ayout="prev, pager, next"的pager拼写错了

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