[مغلق] error on PHP 8.1

Hi I'm having an error after changing the PHP Version to 8.1. On the error logs of the server it says.
2022/09/07 06:53:30 [error] 103140#103140: *99266 FastCGI sent in stderr: "PHP message: PHP Fatal error: Uncaught TypeError: Illegal offset type in isset or empty in /www/devmilwaukeetoolasia_173/public/wp-content/plugins/sitepress-multilingual-cms/classes/core-abstract-classes/class-wpml-element-translation.php:259
Stack trace:
#0 /www/devmilwaukeetoolasia_173/public/wp-content/plugins/sitepress-multilingual-cms/classes/core-abstract-classes/class-wpml-element-translation.php(60): WPML_Element_Translation->maybe_populate_cache(Object(WP_Error))
#1 /www/devmilwaukeetoolasia_173/public/wp-content/plugins/sitepress-multilingual-cms/sitepress.class.php(4576): WPML_Element_Translation->element_id_in(Object(WP_Error), 'en')
#2 /www/devmilwaukeetoolasia_173/public/wp-content/plugins/sitepress-multilingual-cms/inc/template-functions.php(381): SitePress->get_object_id(Object(WP_Error), 'attachment', true, 'en')
#3 /www/devmilwaukeetoolasia_173/public/wp-includes/class-wp-hook.php(307): wpml_object_id_filter(Object(WP_Error), 'attachment', true)
#4 /www/devmilwaukeetoolasia_173/" while reading response header from upstream, client: 27.110.158.226, server: devmilwaukeetoolasia.kinsta.cloud, request: "GET /product/1000-w-angle-grinder/ HTTP/1.1", upstream: "الرابط المخفي;, host: "devmilwaukeetoolasia.kinsta.cloud:61106"