✗ curl -v http://www.chsong.live/.well-known/acme-challenge/kVTpqmpsDubWpBgQDjYqFQ7nfLfkJjQ7lRoBzwc-oC4
* Trying 124.156.193.111...
* TCP_NODELAY set
* Connected to www.chsong.live (124.156.193.111) port 80 (#0)
> GET /.well-known/acme-challenge/kVTpqmpsDubWpBgQDjYqFQ7nfLfkJjQ7lRoBzwc-oC4 HTTP/1.1
> Host: www.chsong.live
> User-Agent: curl/7.64.1
> Accept: */*
>
< HTTP/1.1 404 Not Found
< Server: GitHub.com
< Content-Type: text/html; charset=utf-8
< ETag: "5c1d1070-239b"
< Content-Security-Policy: default-src 'none'; style-src 'unsafe-inline'; img-src data:; connect-src 'self'
< X-GitHub-Request-Id: 1AFE:730F:480BA:58B98:5F1002C6
< Content-Length: 9115
< Accept-Ranges: bytes
< Date: Thu, 16 Jul 2020 07:33:32 GMT
< Via: 1.1 varnish
< Age: 6
< Connection: keep-alive
< X-Served-By: cache-bur17526-BUR
< X-Cache: HIT
< X-Cache-Hits: 1
< X-Timer: S1594884813.942009,VS0,VE0
< Vary: Accept-Encoding
< X-Fastly-Request-ID: ad79473e7a116e07657ebe0bac6650875aab3f89