I've been using Let's Encrypte for a year or so. I used to renewal it via my DirectAdmin SSL Certificates section. But recently, I cannot do that anymore. I get this error:
Getting challenge for fcbarcelona.ir from acme-server... Nonce is empty. Exiting. dig output of acme-v01.api.letsencrypt.org: prod.api.letsencrypt.org. ca80a1adb12a4fbdac5ffcbc944e9a61.pacloudflare.com. 220.127.116.11 Full nonce request output: HTTP/1.1 403 Forbidden Server: nginx Date: Tue, 15 Jun 2021 19:59:03 GMT Content-Type: application/problem+json Content-Length: 333 Connection: keep-alive ETag: "60b6845f-14d"
I searched the internet for hours and I couldn't find a solution. I'm not that expert when it comes to SSH, but I can handle myself with enough help.
I'm looking forward to getting any, the browders are blocking my website for this issue... I highly appreciate your help.
P.s. My VHS server is on CentOS 6.10