Refused to load the image.... because it violates the following Content Security Policy directive...

尝试与vuecli2写的前台交互时出来一个错误：

vuecli服务器正常显示 DONE Compiled successfully in 224628ms，

但是网页控制台显示错误：`Refused to load the image ‘http://localhost:8080/favicon.ico

’ because it violates the following Content Security Policy directive: “default-src ‘none’”. Note that ‘img-src’ was not explicitly set, so ‘default-src’ is used as a fallback.页面只有Cannot GET / `

最后发现是曾经把vuecli2项目打包过，打包时时要把config–>index.js中的 assetsPublicPath: '/'改成`assetsPublicPath: ‘./’，因此现在解决这个问题就要把它统统改回来就没有问题了