如下的日志 
dns: exchange failed for a.nel.cloudflare.com. 
dns: exchange failed for mtalk.google.com. IN A: context canceled 
+0800 2024-11-09 13:40:37 ERROR [1385079922 2.27s] dns: exchange failed for linux.do. IN A: context canceled 
但是我改了电脑的dns之后，还是报这种错。感觉有点无解了