[تم الحل] Website not loading - Critical error

Background of the issue:
I am trying to: Fatal error: Uncaught Error: Call to a member function get_language_codes() on bool in /home/ikvtcyy/public_html/wp-content/plugins/wpml-string-translation/classes/slug-translation/class-wpml-slug-translation-records.php:233 (Describe what you were attempting when the issue occurred). Link to a page where the issue can be seen: الرابط المخفي

Symptoms:
Website not loading - Critical error. Fatal error: Uncaught Error: Call to a member function get_language_codes() on bool in /home/ikvtcyy/public_html/wp-content/plugins/wpml-string-translation/classes/slug-translation/class-wpml-slug-translation-records.php:233

Questions:
How can I resolve the fatal error related to get_language_codes()?
Why is my website not loading due to this critical error?