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Roundcube filter error on a Plesk server: File is missing, please contact server administrator

Plesk for Linux kb: technical mail roundcube

Applicable to:

  • Plesk for Linux

Symptoms

  • The following error can be seen when accessing Roundcube Webmail > Settings > Filter (Out of Office, or Forwarding):

    FILE NOT FOUND
    The requested resource was not found!
    Please contact your server-administrator.
    Failed request: webmail.example.com/roundcube/?_task=settings&_action=plugin.managesieve

  • The /var/log/plesk-roundcube/errors log file contains the following error:

    [01-Jul-2024 19:41:39 +0000]: <je5n10vf> PHP Error: Error loading template for managesieve.managesieve in /usr/share/psa-roundcube/program/include/rcmail_output_html.php on line 804 (GET /roundcube/?_task=settings&_action=plugin.managesieve

Cause

This is due to a skin being used on webmail:

# grep skin /usr/share/psa-roundcube/config/config.inc.php | grep config | head -n2
$config['skin'] = 'custom_skin';

Resolution

  1. Log in using SSH.
  2. Use a text editor to comment out the custom skin line (the line starts with $config['skin']) in the configuration file /usr/share/psa-roundcube/config/config.inc.php.  
    To comment on the line, use the # symbol at the start of the line:
    Before: 

    CONFIG_TEXT: $config['skin'] = 'custom_skin';

    After:

    CONFIG_TEXT: #$config['skin'] = 'custom_skin';

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Comments

1 comment
Date Votes
  • Hi there, thanks for the workaround. How to use a custom skin now and the auto reply within Roundcube? Kind regards, c--

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