webpack-dev-server 启动报错

ERROR in multi (webpack)-dev-server/client?http://localhost:8080 webpack/hot/dev-server ./src
Module not found: Error: Can't resolve './src' in 'C:\WebstormProjects\webpack-demo'
 @ multi (webpack)-dev-server/client?http://localhost:8080 webpack/hot/dev-server ./src

原因：找不到webpack.config.js文件
解决方案：

webpack-dev-server --config webpack.dev.js