![xmlhttprequest - Access-Control-Allow-Origin: "*" not allowed when credentials flag is true, but there is no Access-Control-Allow-Credentials header - Stack Overflow xmlhttprequest - Access-Control-Allow-Origin: "*" not allowed when credentials flag is true, but there is no Access-Control-Allow-Credentials header - Stack Overflow](https://i.stack.imgur.com/qchoG.png)
xmlhttprequest - Access-Control-Allow-Origin: "*" not allowed when credentials flag is true, but there is no Access-Control-Allow-Credentials header - Stack Overflow
![vue +koa报错--koa-cors使用的坑No Access-Control-Allow-Origin header is present ..解决方法_xxxxxxxxYZ的博客-CSDN博客 vue +koa报错--koa-cors使用的坑No Access-Control-Allow-Origin header is present ..解决方法_xxxxxxxxYZ的博客-CSDN博客](https://img-blog.csdnimg.cn/20190812153531653.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3h4eHh4eHh4WVo=,size_16,color_FFFFFF,t_70)
vue +koa报错--koa-cors使用的坑No Access-Control-Allow-Origin header is present ..解决方法_xxxxxxxxYZ的博客-CSDN博客
![node.js - I'm getting a CORS error although Access-Control-Allow-Credentials is not set - Stack Overflow node.js - I'm getting a CORS error although Access-Control-Allow-Credentials is not set - Stack Overflow](https://i.stack.imgur.com/emuQ2.png)