DevTools 无法加载源映射： 无法加载http://localhost:8081/statics/css/bootstrap.min.css.map 的内容:HTTP 错误: 状态代码 404，net::ERR_HTTP_RESPONSE_CODE_FAILURE

 解决办法：
找到bootstrap.min.css，删除最后一行注释

 注意：

如果是css报错就删除：
/*# sourceMappingURL=bootstrap.min.css.map */
 
如果是js报错就删除：
 //# sourceMappingURL=bootstrap.min.js.map

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