为什么引用scss报错，sass-loader和node-sass都安装了

Failed to compile with 1 errors                                            12:54:37 PM
 error  in ./src/assets/scss/index.scss

Module build failed: TypeError: this.getResolve is not a function
    at Object.loader (F:\app\my-app\node_modules\_sass-loader@8.0.0@sass-loader\dist\index.js:52:26)

 @ ./src/assets/scss/index.scss 4:14-226 13:3-17:5 14:22-234
 @ ./src/main.js
 @ multi (webpack)-dev-server/client?http://localhost:8080 webpack/hot/dev-server ./src/main.js