引入iview的css时报错

img
引入时出现


in ./node_modules/iview/dist/styles/fonts/ionicons.svg?v=3.0.0
Syntax Error: ExtractPluginMissingException: svg-sprite-loader exception. svg-sprite-loader in extract mode requires the corresponding plugin
 @ ./node_modules/css-loader/dist/cjs.js??ref--6-oneOf-3-1!./node_modules/postcss-loader/src??ref--6-oneOf-3-2!./node_modules/iview/dist/styles/iview.css 7:36-75
 @ ./node_modules/iview/dist/styles/iview.css
 @ ./src/main.js
 @ multi (webpack)-dev-server/client?https://localhost.longfor.uat:8080&sockPath=/sockjs-node (webpack)/hot/dev-server.js ./src/main.js

的错误，vue.config.js中配置了也不行..
img

main.js中是否引入？