[Gelöst] E_ERROR with PHP 8 and higher

WordPress version 6.2.2
Active theme: Hello Elementor Child
Current plugin: WPML Multilingual CMS (version 4.6.4)

We have the following problem: After a migration to another server, it comes this error message and website is down when we upgrade to php 8 and higher. If we switch to php 7.4 then everything goes again. Note on the side to maybe troubleshoot easier, we no longer know if the website had worked on the old server on php 7.4 or on php 8 or higher. Error only after migration and only when switching to php8. Is there a solution for this?

Following the error message from wordpress:

Ein Fehler vom Typ E_ERROR wurde in der Zeile 72 der Datei /var/www/wusr103290/www/wp-content/plugins/sitepress-multilingual-cms/classes/action-filter-loader/class-wpml-action-type.php verursacht. Fehlermeldung: Uncaught TypeError: array_intersect(): Argument #1 ($array) must be of type array, bool given in /var/www/wusr103290/www/wp-content/plugins/sitepress-multilingual-cms/classes/action-filter-loader/class-wpml-action-type.php:72
Stack trace:
#0 /var/www/wusr103290/www/wp-content/plugins/sitepress-multilingual-cms/classes/action-filter-loader/class-wpml-action-type.php(72): array_intersect()
#1 /var/www/wusr103290/www/wp-content/plugins/sitepress-multilingual-cms/classes/action-filter-loader/class-wpml-action-type.php(63): WPML\Action\Type->has_implementation()
#2 /var/www/wusr103290/www/wp-content/plugins/sitepress-multilingual-cms/classes/action-filter-loader/class-wpml-action-filter-loader.php(37): WPML\Action\Type->is()
#3 /var/www/wusr103290/www/wp-content/plugins/wpml-string-translation/plugin.php(62): WPML_Action_Filter_Loader->load()
#4 /var/www/wusr103290/www/wp-includes/class-wp-hook.php(308): wpml_st_core_loaded()
#5 /var/www/wusr103290/www/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters()
#6 /var/www/wusr103290/www/wp-includes/plugin.php(517): WP_Hook->do_action()
#7 /var/www/wusr103290/www/wp-content/plugins/sitepress-multilingual-cms/sitepress.class.php(523): do_action()
#8 /var/www/wusr103290/www/wp-includes/class-wp-hook.php(308): SitePress->init()
#9 /var/www/wusr103290/www/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters()
#10 /var/www/wusr103290/www/wp-includes/plugin.php(517): WP_Hook->do_action()
#11 /var/www/wusr103290/www/wp-settings.php(486): do_action()
#12 /var/www/wusr103290/www/wp-config.php(86): require_once('...')
#13 /var/www/wusr103290/www/wp-load.php(50): require_once('...')
#14 /var/www/wusr103290/www/wp-admin/admin-post.php(19): require_once('...')
#15 {main}
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