Deprecation Exception after Creating Object in Course

[chfsx]

Describe the bug
After creating a Opencast Event Video in a Course, the Course cannot be accessed anymore depending on the error level of the installation (we MUST fix deprecation issues as well...)

Whoops\Exception\ErrorException thrown with message "Creation of dynamic property ilObjOpencastEventListGUI::$payment_enabled is deprecated"

Stacktrace:
#21 Whoops\Exception\ErrorException in /var/www/html/public/Customizing/global/plugins/Services/Repository/RepositoryObject/OpencastEvent/classes/class.ilObjOpencastEventListGUI.php:36
#20 ilErrorHandling:handlePreWhoops in /var/www/html/public/Customizing/global/plugins/Services/Repository/RepositoryObject/OpencastEvent/classes/class.ilObjOpencastEventListGUI.php:36
#19 ilObjOpencastEventListGUI:initCommands in /var/www/html/components/ILIAS/Repository/PluginSlot/class.ilObjectPluginListGUI.php:49
#18 ilObjectPluginListGUI:init in /var/www/html/components/ILIAS/ILIASObject/classes/class.ilObjectListGUI.php:225
#17 ilObjectListGUI:__construct in /var/www/html/components/ILIAS/Repository/PluginSlot/class.ilObjectPluginListGUI.php:37
#16 ilObjectPluginListGUI:__construct in /var/www/html/components/ILIAS/ILIASObject/classes/class.ilObjectListGUIFactory.php:37
#15 ilObjectListGUIFactory:_getListGUIByType in /var/www/html/components/ILIAS/Container/Content/class.ItemRenderer.php:283
#14 ILIAS\Containter\Content\ItemRenderer:getItemGUI in /var/www/html/components/ILIAS/Container/Content/class.ItemRenderer.php:95
#13 ILIAS\Containter\Content\ItemRenderer:renderItem in /var/www/html/components/ILIAS/Container/Content/class.ilContainerRenderer.php:961
#12 ilContainerRenderer:renderItemBlockSequence in /var/www/html/components/ILIAS/Container/Content/SessionsView/class.ilContainerSessionsContentGUI.php:70
#11 ilContainerSessionsContentGUI:renderItemList in /var/www/html/components/ILIAS/Container/Content/class.ilContainerContentGUI.php:283
#10 ilContainerContentGUI:getMainContent in /var/www/html/components/ILIAS/Container/Content/class.ilContainerContentGUI.php:255
#9 ilContainerContentGUI:getCenterColumnHTML in /var/www/html/components/ILIAS/Container/Content/class.ilContainerContentGUI.php:172
#8 ilContainerContentGUI:setOutput in /var/www/html/components/ILIAS/Container/classes/class.ilContainerGUI.php:416
#7 ilContainerGUI:renderObject in /var/www/html/components/ILIAS/Course/classes/class.ilObjCourseGUI.php:151
#6 ilObjCourseGUI:viewObject in /var/www/html/components/ILIAS/Course/classes/class.ilObjCourseGUI.php:2489
#5 ilObjCourseGUI:executeCommand in /var/www/html/components/ILIAS/UICore/classes/class.ilCtrl.php:119
#4 ilCtrl:forwardCommand in /var/www/html/components/ILIAS/Repository/classes/class.ilRepositoryGUI.php:244
#3 ilRepositoryGUI:show in /var/www/html/components/ILIAS/Repository/classes/class.ilRepositoryGUI.php:224
#2 ilRepositoryGUI:executeCommand in /var/www/html/components/ILIAS/UICore/classes/class.ilCtrl.php:119
#1 ilCtrl:forwardCommand in /var/www/html/components/ILIAS/UICore/classes/class.ilCtrl.php:92
#0 ilCtrl:callBaseClass in /var/www/html/public/ilias.php:38

To Reproduce
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2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior
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Log
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Environment (please complete the following information):

• ILIAS version: [e.g. v7.6 2022-01-26]
• PHP version: [e.g. PHP 7.4.3]
• Plugin version: [e.g. 4.0.0]
• Browser: [e.g. chrome, safari]

Additional context
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