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vue中使用upload , "TypeError: Cannot read property 'key' of null"

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vue中使用upload , "TypeError: Cannot read property 'key' of null"

image.png
在vue中使用antd的upload组件，按照官网实例写的，会报这个错

upload组件
image.png

引用
image.png

版本：
"vue": "^2.6.11",
"ant-design-vue": "^1.6.5",


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感觉不是这里的报错，确定只在这里用key了？


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