TypeError: Cannot create property 'type' on number '20001'

这个错误是因为你在一个数字上尝试创建一个属性，而数字是不可编辑的。根据你提供的引用，这个错误可能是由于你在使用element plus中的upload上传组件时，file-list属性的类型不正确导致的。官方文档要求file-list属性是一个包含对象的数组，而你之前使用的是一个逗号分隔的字符串。当需求更改后，你可能没有注意到这一部分，导致出现了这个错误。解决方法是将file-list属性的值更改为一个包含对象的数组。这样就可以解决TypeError: Cannot create property 'type' on number '20001'的问题。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
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