Restore Roundcube Webmail on HestiaCP

I’m running HestiaCP on an Ubuntu server and, after installing PHP 8.1 alongside PHP 8.3, the Roundcube interface stopped loading altogether. The login page never appears—just a blank response. Prior to the version swap I had edited several Roundcube config files and adjusted the web-server settings inside HestiaCP, so there’s a good chance those customisations are now clashing with the new PHP stack or missing extensions. Your task is to trace and resolve every dependency or mis-configuration that prevents Roundcube from displaying. That includes checking PHP-FPM pools, making sure essential extensions (imap, intl, mbstring, xml, etc.) are active for the correct version, repairing any symlinks, and bringing the Nginx/Apache vHost back into line with HestiaCP conventions. If my earlier file edits are at fault, roll them back or rewrite them cleanly. Acceptance criteria • /webmail loads the Roundcube login screen without PHP or JS errors • I can log in, send, and receive a test email successfully • A short changelog of what you touched so I can repeat the fix after future PHP upgrades You will need solid experience with HestiaCP, Roundcube, PHP 8.x, Postfix/Dovecot, and the typical Nginx+Apache proxy setup that Hestia deploys. I’m ready to give you SSH and panel access as soon as we agree on the engagement.

Project ID: 39749284