Begriffserklärung Update 2.0.4

An update of package de.yourecom.definition2 from version 2.0.3 pl 3 to 2.0.4 pl 4 is not supported.

Stacktrace:
#0 /var/www/vhosts/wcf/lib/system/package/PackageInstallationScheduler.class.php(518): wcf\system\package\PackageInstallationScheduler->findShortestUpdateThread('de.yourecom.def...', Array, '2.0.3 pl 3', '2.0.4 pl 4')
#1 /var/www/vhosts/wcf/lib/system/package/PackageInstallationScheduler.class.php(106): wcf\system\package\PackageInstallationScheduler->updatePackage('34', '2.0.4 pl 4')
#2 /var/www/vhosts/wcf/lib/system/package/PackageInstallationScheduler.class.php(67): wcf\system\package\PackageInstallationScheduler->tryToInstallPackage('de.yourecom.def...', '2.0.4 pl 4', true, false)
#3 /var/www/vhosts/wcf/lib/data/package/update/PackageUpdateAction.class.php(497): wcf\system\package\PackageInstallationScheduler->buildPackageInstallationStack(false)
#4 /var/www/vhosts/wcf/lib/data/package/update/PackageUpdateAction.class.php(449): wcf\data\package\update\PackageUpdateAction->createQueue('update')
#5 [internal function]: wcf\data\package\update\PackageUpdateAction->prepareUpdate()
#6 /var/www/vhosts/wcf/lib/data/AbstractDatabaseObjectAction.class.php(196): call_user_func(Array)
#7 /var/www/vhosts/wcf/lib/action/AJAXProxyAction.class.php(77): wcf\data\AbstractDatabaseObjectAction->executeAction()
#8 /var/www/vhosts/wcf/lib/action/AJAXInvokeAction.class.php(96): wcf\action\AJAXProxyAction->invoke()
#9 /var/www/vhosts/wcf/lib/action/AbstractAction.class.php(49): wcf\action\AJAXInvokeAction->execute()
#10 /var/www/vhosts/wcf/lib/action/AJAXInvokeAction.class.php(63): wcf\action\AbstractAction->__run()
#11 /var/www/vhosts/wcf/lib/system/request/Request.class.php(58): wcf\action\AJAXInvokeAction->__run()
#12 /var/www/vhosts/wcf/lib/system/request/RequestHandler.class.php(139): wcf\system\request\Request->execute()
#13 /var/www/vhosts/acp/index.php(9): wcf\system\request\RequestHandler->handle('cms', true)
#14 {main}