Can't resolve 'E:\study\web#project\backend\mana\node_modules\webpack-dev-server\client\index.js

新建vue项目报错：ERROR in Module not found: Error: Can't resolve 'E:\study\web#project\backend\mana\node_modules\webpack-dev-server\client\index.js

启动项目后报错

浏览器打开localhost:8080运行的是以前别的项目，新项目停止，则浏览器运行的老项目停止

新项目改变端口号无效，仍然报同样的错