项目启动后访问报错，找不到错误位置

[1402848990]

npm run start 后
报错信息如下：
TypeError [ERR_INVALID_ARG_TYPE]: The "path" argument must be of type string. Received undefined
at validateString (internal/validators.js:124:11)
at Object.join (path.js:1039:7)
at noopServiceWorkerMiddleware (/Users/wangrui/Documents/project/2022/yiqing/2019-nCoV-Virus/node_modules/react-dev-utils/noopServiceWorkerMiddleware.js:14:26)
at Layer.handle [as handle_request] (/Users/wangrui/Documents/project/2022/yiqing/2019-nCoV-Virus/node_modules/express/lib/router/layer.js:95:5)
at trim_prefix (/Users/wangrui/Documents/project/2022/yiqing/2019-nCoV-Virus/node_modules/express/lib/router/index.js:323:13)
at /Users/wangrui/Documents/project/2022/yiqing/2019-nCoV-Virus/node_modules/express/lib/router/index.js:284:7
at Function.process_params (/Users/wangrui/Documents/project/2022/yiqing/2019-nCoV-Virus/node_modules/express/lib/router/index.js:341:12)
at next (/Users/wangrui/Documents/project/2022/yiqing/2019-nCoV-Virus/node_modules/express/lib/router/index.js:275:10)
at launchEditorMiddleware (/Users/wangrui/Documents/project/2022/yiqing/2019-nCoV-Virus/node_modules/react-dev-utils/errorOverlayMiddleware.js:20:7)
at Layer.handle [as handle_request] (/Users/wangrui/Documents/project/2022/yiqing/2019-nCoV-Virus/node_modules/express/lib/router/layer.js:95:5)
at trim_prefix (/Users/wangrui/Documents/project/2022/yiqing/2019-nCoV-Virus/node_modules/express/lib/router/index.js:323:13)
at /Users/wangrui/Documents/project/2022/yiqing/2019-nCoV-Virus/node_modules/express/lib/router/index.js:284:7
at Function.process_params (/Users/wangrui/Documents/project/2022/yiqing/2019-nCoV-Virus/node_modules/express/lib/router/index.js:341:12)
at next (/Users/wangrui/Documents/project/2022/yiqing/2019-nCoV-Virus/node_modules/express/lib/router/index.js:275:10)
at handleWebpackInternalMiddleware (/Users/wangrui/Documents/project/2022/yiqing/2019-nCoV-Virus/node_modules/react-dev-utils/evalSourceMapMiddleware.js:42:7)
at Layer.handle [as handle_request] (/Users/wangrui/Documents/project/2022/yiqing/2019-nCoV-Virus/node_modules/express/lib/router/layer.js:95:5)