控制台发现有报错：
解决：找到对应文件
方法1：代码中使用了v-show以及el-form标签中使用了label-width="auto"，导致离开页面后产生报错，auto改为具体数值
方法2：v-show改为v-if
[Vue warn]: Error in beforeDestroy hook: "Error: [ElementForm]unpected width
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