Roundcube is not able to load, reporting that PHP version is not supported:
Required PHP >= 7.3
LiteSpeed is used instead of Apache
Attempts to switch the version of PHP for Roundcube using the How to change PHP version for webmail in Plesk for Linux
article has no effect.
PHP Selector is used
- In some scenarios LiteSpeed ignores Plesk PHP settings for webmail and uses bundled LSPHP. Since it is LSPHP 5.6 Roundcube is not able to work.
Replace the LSPHP 5.6 binary with a symlink pointing to the more recent version of LSPHP:
- Backup default lsphp binary:
# mv /usr/local/bin/lsphp /usr/local/bin/lsphp-bk
- Create a symlink to LSPHP 7.3 or other version installed on the server:
# ln -s /opt/plesk/php/7.3/bin/lsphp /usr/local/bin/lsphp
For reference: LiteSpeed Troubleshooting guide