vite proxy axios出现TypeError: Cannot read property 'split' of null

今天把之前vue bkui-cli 创建的项目copy 值vite 工程。发现报错：

 ERROR  10:28:35 AM [vite] Internal server error: Cannot read properties of null (reading 'split') 

ERROR  10:28:35 AM [vite] Internal server error: Cannot read properties of null (reading 'split')

at required (/Userszhoulujun/workspace/vite-vue3-tsx/node_modules/vite/dist/node/chunks/dep-8f5c9290.js:55482:23)

at Object.common.setupOutgoing (/Userszhoulujun/workspace/vite-vue3-tsx/node_modules/vite/dist/node/chunks/dep-8f5c9290.js:55610:7)

at Array.stream (/Userszhoulujun/workspace/vite-vue3-tsx/node_modules/vite/dist/node/chunks/dep-8f5c9290.js:56621:16)

at ProxyServer.<anonymous> (/Userszhoulujun/workspace/vite-vue3-tsx/node_modules/vite/dist/node/chunks/dep-8f5c9290.js:56934:21)

at viteProxyMiddleware (/Userszhoulujun/workspace/vite-vue3-tsx/node_modules/vite/dist/node/chunks/dep-8f5c9290.js:57190:23)

at call (/Userszhoulujun/workspace/vite-vue3-tsx/node_modules/vite/dist/node/chunks/dep-8f5c9290.js:44106:7)

at next (/Userszhoulujun/workspace/vite-vue3-tsx/node_modules/vite/dist/node/chunks/dep-8f5c9290.js:44050:5)

at cors (/Userszhoulujun/workspace/vite-vue3-tsx/node_modules/vite/dist/node/chunks/dep-8f5c9290.js:44574:7)

at /Userszhoulujun/workspace/vite-vue3-tsx/node_modules/vite/dist/node/chunks/dep-8f5c9290.js:44610:17

at originCallback (/Userszhoulujun/workspace/vite-vue3-tsx/node_modules/vite/dist/node/chunks/dep-8f5c9290.js:44600:15)

google 找到了答案，记录一下：https://github.com/PanJiaChen/vue-element-admin/issues/3285#issuecomment-728670320

我是这解决的，devServer.proxy.target需要提供完整的url，如http://www.xxx.com， 缺少http，就会报上述错误

这个报错真的打疼，一点提示都没有，安装上面的改了，就好了

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