Warning: Invalid configuration object. webpack-dev-server has been initialised using a configuration object that does not match the API schema.
 - configuration has an unknown property 'disableHostCheck'. These properties are valid:
   object { hot?, hotOnly?, lazy?, host?, filename?, publicPath?, port?, socket?, watchOptions?, headers?, clientLogLevel?, overlay?, key?, cert?, ca?, pfx?, pfxPassphrase?, inline?, public?, https?, contentBase?, watchContentBase?, open?, features?, compress?, proxy?, historyApiFallback?, staticOptions?, setup?, stats?, reporter?, noInfo?, quiet?, serverSideRender?, index?, log?, warn? } Use --force to continue.