Webpack dev-server cannot see code changes

I start learning about webpack configuration and cannot see the effect of changes made on files.My webpack.config.js

...

   devServer: {    watchFiles: ["src/**/*.js", "css/**/*", "src/**/*.html"],    static: {      directory: path.join(__dirname, "dist"),    },    liveReload: true,    port: 5000,    open: true,  },

...

Thanks in advance.