After upgrade to PHP 8.1 I keep getting errors

Hello , just upgraded my website to PHP version 8.1 (development server), the package of JEvents is the latest, 3.6.45.

After upgrading I keep getting the error below. I first had a template override, thought the problem was there, but after deleting it and using the module default the error still kept coming back.

0Call to undefined method Joomla\Registry\Registry::setValue()

Hereby the Stacktrace:

Call stack

# 	Function 	Location

1 	() 	JROOT\modules\mod_jevents_latest\tmpl\activiteiten\latest.php:274

2 	ActiviteitenModLatestView->getLatestEventsData() 	JROOT\modules\mod_jevents_latest\tmpl\activiteiten\latest.php:673

3 	ActiviteitenModLatestView->displayLatestEvents() 	JROOT\modules\mod_jevents_latest\mod_jevents_latest.php:54

4 	include() 	JROOT\libraries\src\Helper\ModuleHelper.php:200

5 	Joomla\CMS\Helper\ModuleHelper::renderModule() 	JROOT\libraries\src\Document\Renderer\Html\ModuleRenderer.php:98

6 	Joomla\CMS\Document\Renderer\Html\ModuleRenderer->render() 	JROOT\libraries\src\Document\Renderer\Html\ModulesRenderer.php:47

7 	Joomla\CMS\Document\Renderer\Html\ModulesRenderer->render() 	JROOT\libraries\src\Document\HtmlDocument.php:511

8 	Joomla\CMS\Document\HtmlDocument->getBuffer() 	JROOT\libraries\src\Document\HtmlDocument.php:803

9 	Joomla\CMS\Document\HtmlDocument->_renderTemplate() 	JROOT\libraries\src\Document\HtmlDocument.php:577

10 	Joomla\CMS\Document\HtmlDocument->render() 	JROOT\libraries\src\Application\CMSApplication.php:1112

11 	Joomla\CMS\Application\CMSApplication->render() 	JROOT\libraries\src\Application\SiteApplication.php:778

12 	Joomla\CMS\Application\SiteApplication->render() 	JROOT\libraries\src\Application\CMSApplication.php:231

13 	Joomla\CMS\Application\CMSApplication->execute() 	JROOT\index.php:49

I hope any of you can give me some advice.

Tom