Knowledge Base

Roundcube on Plesk server shows blank page: Unsupported database driver: in /usr/share/psa-roundcube/program/lib/Roundcube/rcube

Symptoms

Roundcube webmail on Plesk server shows blank page.

The following errors can be found in /var/log/httpd/error_log :

[fcgid:warn] [pid 120445] [client 203.0.113.2:51120] mod_fcgid: stderr: PHP Warning: file_put_contents(/usr/share/errors): failed to open stream: Permission denied in /usr/share/psa-roundcube/program/lib/Roundcube/rcube.php on line 1242
 [fcgid:warn] [pid 120445] [client 203.0.113.2:51120] mod_fcgid: stderr: PHP Warning: Configuration error. Unsupported database driver: in /usr/share/psa-roundcube/program/lib/Roundcube/rcube.php on line 1347

Cause

suexec module is not enabled.

Resolution

Log into Plesk
Go to Tools & Settings > Apache Web Server
Mark the checkbox near suexec module and click OK:

Click on a section to expand

If the steps above did not help, reinstall Roundcube

Go to Tools & Settings > Updates and Upgrades > Add/Remove Components > Webmail services > Roundcube and mark component to remove and click OK:

Install Roundcube at Tools & Settings > Updates and Upgrades > Add/Remove Components > Webmail services > Roundcube and mark component to install: