I have installed mediaWiki with version 1.39 LTS together with the extension "Page Forms" and the "Cognitive Process Designer".
The wiki of the Cognitive Process Designer says that you should enter this command in the terminal for the background service:
php extensions/CognitiveProcessDesigner/vendor/mwstake/mediawiki-component-processmanager/maintenance/processRunner.php maintenance/Maintenance.php --wait
Unfortunately, I get the following errors when I do this:
/usr/bin/php /var/www/html/mediawiki/extensions/CognitiveProcessDesigner/vendor/mwstake/mediawiki-component-processmanager/maintenance/processRunner.php maintenance/Maintenance.php --wait
[f84ac3ccf60395c0b4824c20] [no req] Error: Class "MWStake\MediaWiki\Component\ProcessManager\ProcessManager" not found
Backtrace:
from /var/www/html/mediawiki/extensions/CognitiveProcessDesigner/vendor/mwstake/mediawiki-component-processmanager/maintenance/processRunner.php(31)
#0 /var/www/html/mediawiki/maintenance/includes/MaintenanceRunner.php(309): ProcessRunner->execute()
#1 /var/www/html/mediawiki/maintenance/doMaintenance.php(85): MediaWiki\Maintenance\MaintenanceRunner->run()
#2 /var/www/html/mediawiki/extensions/CognitiveProcessDesigner/vendor/mwstake/mediawiki-component-processmanager/maintenance/processRunner.php(157): require_once(string)
#3 {main}
I have called the given command. I expect the background service to start.