webpack打包时提示 Invalid configuration object. Webpack has been initialized using a configuration object that does not match the API schema 错误

webpack打包时webpack.config.js文件里面的devtool属性值为‘cheap-module-eval-source-map’，报如下错误：

 

 原因如下：

https://blog.csdn.net/lqlqlq007/article/details/80091899