This article explains how to troubleshoot blank pages that are displayed when you try to edit or display a command on Debian, from Centreon version 22.04.

Symptom

• You get a blank page as below when you want to edit or display a Debian command, with the following command types: Notification, Check, Misc, Discovery, Connectors.

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• In the /var/log/apache2/error.log file, this type or error can confirm the issue:
  AH01071: Got error 'PHP message: PHP Warning:  opendir(/usr/lib64/nagios/plugins/): Failed to open directory: No such file or directory

Solution

1. Create the following folder to solve:

   mkdir -p /usr/lib64/nagios/plugins/

    

2. Restart PHP:
   systemctl restart php8.1-fpm

See also

https://thewatch.centreon.com/platform-7/blank-pages-after-migration-22-10-to-23-04-command-don-t-show-anything-2099