Sending an ACME HTTP validation request to 3vr.club results in an unacceptable redirect. This is most likely a misconfiguration of your web server or your web application.
It appears that a redirect was generated by your web server that is missing a trailing slash after your domain name: https://3vr.club.well-known/acme-challenge/letsdebug-test. Check your web server configuration and .htaccess for Redirect/RedirectMatch/RewriteRule.
Trace:
@0ms: Making a request to http://3vr.club/.well-known/acme-challenge/letsdebug-test (using initial IP 188.138.127.94)
@0ms: Dialing 188.138.127.94
@169ms: Server response: HTTP 301 Moved Permanently
@169ms: Received redirect to https://3vr.club.well-known/acme-challenge/letsdebug-test
A test authorization for 3vr.club to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
Fetching https://3vr.club.well-known/acme-challenge/xnscEIxBvHlLdVRCuB-gNYO7uVb-bzPKSEiUmMxgg10: Error getting validation data