Please fill out the fields below so we can help you better. Note: you must provide your domain name to get help. Domain names for issued certificates are all made public in Certificate Transparency logs (e.g. crt.sh | example.com), so withholding your domain name here does not increase secrecy, but only makes it harder for us to provide help.
It appears that the webserver for ehsanmarketing.com is sitting behind Cloudflare. This can make fulfilling an http-01 challenge very difficult. I highly recommend reading about how SSL/TLS works with Cloudflare and considering the usage of a Cloudflare Origin CA certificate rather than a Let's Encrypt certificate.
me faces an error again,
....
Obtaining a new certificate
Performing the following challenges:
http-01 challenge for meet.worldehsan.org
Using the webroot path /usr/share/jitsi-meet for all unmatched domains.
Waiting for verification...
Challenge failed for domain meet.worldehsan.org
http-01 challenge for meet.worldehsan.org
Cleaning up challenges
Some challenges have failed.