The Certificate Authority failed to download the temporary challenge files created by Certbot -- Connection refused


No certificates found.


and now getting:

  Domain: alsharakagroup.com
  Type:   unauthorized
  Detail: Invalid response from http://alsharakagroup.com/.well-known/acme-challenge/elmC2NPAes9BK9agvsu5Cdr2nYGIbJj9JiYSbfTaIFQ [147.182.136.95]: "<html>\r\n<head><title>404 Not Found</title></head>\r\n<body>\r\n<center><h1>404 Not Found</h1></center>\r\n<hr><center>nginx</center>\r\n"

  Domain: www.alsharakagroup.com
  Type:   unauthorized
  Detail: Invalid response from http://www.alsharakagroup.com/.well-known/acme-challenge/JTyVutcpWOJBC_sjnyiENZhLIKS4Z-XiPlV3IFEgFHs [147.182.136.95]: "<html>\r\n<head><title>404 Not Found</title></head>\r\n<body>\r\n<center><h1>404 Not Found</h1></center>\r\n<hr><center>nginx</center>\r\n"