[Closed] Getting back up my websites after Elementor update

Background of the issue:
I was trying to get my websites back up after an Elementor Pro update. We encountered an issue where both our website languages were suddenly down. The error is universal WP error 500. We checked the logs and saw that the issue is logged by one of the integration addons for Elementor - like a class is missing: [Mon Jan 20 13:39:15.858957 2025] [proxy_fcgi:error] [pid 20656:tid 139815085377280] [client 193.41.206.98:0] AH01071: Got error 'PHP message: PHP Fatal error: Uncaught Error: Class "Elementor\Core\Schemes\Color" not found in /mnt/HC_Volume_23477326/home/younify/web/younify.nl/public_html/wp-content/plugins/sitepress-multilingual-cms/addons/wpml-page-builders/classes/Integrations/Elementor/LanguageSwitcher/WidgetAdaptor.php:156nStack trace:n#0 /mnt/HC_Volume_23477326/home/younify/web/younify.nl/public_html/wp-content/plugins/sitepress-multilingual-cms/addons/wpml-page-builders/classes/Integrations/Elementor/LanguageSwitcher/Widget.php(50): WPML\PB\Elementor\LanguageSwitcher\WidgetAdaptor->registerControls()n#1 /mnt/HC_Volume_23477326/home/younify/web/younify.nl/public_html/wp-content/plugins/elementor/includes/base/controls-stack.php(2427): WPML\PB\Elementor\LanguageSwitcher\Widget->register_controls()n#2 /mnt/HC_Volume_23477326/home/younify/web/younify.nl/public_html/wp-content/plugins/elementor/includes/base/widget-base.php(1050): Elementor\Controls_Stack->init_controls()n#3 /mnt/HC_Volume_23477326/home/younif...' After this, we've disabled the WPLM Multilingual CMS plugin which was then at v4.6.13. After that, our base language of the website, NL, worked, however our alternate language (EN) didn't work anymore and after trying to re-enable your plugin, we got the message 'Plugin could not be activated because it triggered a fatal error.' We proceeded with updating it to latest version - 4.6.15 via OTGS installer plugin - update process went smooth, however we're still unable to activate the plugin due to the same error like I mentioned above. End result: we've managed to have our base language active on frontend, however, we're still missing our second language. Please consider this ticket critical, as we're missing half of the website. Link to a page where the issue can be seen: hidden link

Symptoms:
Both website languages were down after updating Elementor Pro, resulting in a universal WP error 500. The logs indicate a missing class error related to an integration addon for Elementor. After disabling the WPML Multilingual CMS plugin, the base language worked but the alternate language did not. Re-enabling the plugin triggered a fatal error, even after updating to version 4.6.15.

Questions:
What can we do to re-activate the plugin and have our secondary language working again?