Error: Failed opening required '/var/www/vhosts/qualifizierung.com/subdomains/wiki/httpdocs/inc/indexer.php' (include_path='.:/opt/plesk/php/8.3/share/pear')

An unforeseen error has occured. This is most likely a bug somewhere. It might be a problem in the cloud plugin.

More info has been written to the DokuWiki error log.