将依赖项升级到最新版本时，我的 mern 堆栈应用程序崩溃并收到了 typeError 消息
类型错误：路径必须是字符串。收到未定义
任何人都可以帮忙吗？提前致谢。这是错误：
TypeError: Path must be a string. Received undefined
at assertPath (path.js:28:11)
at Object.join (path.js:489:7)
at noopServiceWorkerMiddleware (C:\Projects\react-portfolio\comfort-app\node_modules\react-dev-utils\noopServiceWorkerMiddleware.js:14:26)
at Layer.handle [as handle_request] (C:\Projects\react-portfolio\comfort-app\node_modules\express\lib\router\layer.js:95:5)
at trim_prefix (C:\Projects\react-portfolio\comfort-app\node_modules\express\lib\router\index.js:317:13)
at C:\Projects\react-portfolio\comfort-app\node_modules\express\lib\router\index.js:284:7
at Function.process_params (C:\Projects\react-portfolio\comfort-app\node_modules\express\lib\router\index.js:335:12)
at next (C:\Projects\react-portfolio\comfort-app\node_modules\express\lib\router\index.js:275:10)
at launchEditorMiddleware (C:\Projects\react-portfolio\comfort-app\node_modules\react-dev-utils\errorOverlayMiddleware.js:20:7)
at Layer.handle [as handle_request] (C:\Projects\react-portfolio\comfort-app\node_modules\express\lib\router\layer.js:95:5)
at trim_prefix (C:\Projects\react-portfolio\comfort-app\node_modules\express\lib\router\index.js:317:13)
at C:\Projects\react-portfolio\comfort-app\node_modules\express\lib\router\index.js:284:7
at Function.process_params (C:\Projects\react-portfolio\comfort-app\node_modules\express\lib\router\index.js:335:12)
at next (C:\Projects\react-portfolio\comfort-app\node_modules\express\lib\router\index.js:275:10)
at handleWebpackInternalMiddleware (C:\Projects\react-portfolio\comfort-app\node_modules\react-dev-utils\evalSourceMapMiddleware.js:42:7)
at Layer.handle [as handle_request] (C:\Projects\react-portfolio\comfort-app\node_modules\express\lib\router\layer.js:95:5)
package.json 文件在这里：
{
"name": "comfort-app",
"version": "0.1.0",
"private": true,
"dependencies": {
"@fortawesome/react-fontawesome": "^0.1.9", …