[Gelöst] PHP Fatal error: Uncaught ValueError: Unknown format specifier

Background of the issue:
I am trying to buy a product on the main Serbian language site at versteckter Link. When I attempt this, I encounter an error 500 in the console. The error log shows a PHP Fatal error: Uncaught ValueError: Unknown format specifier "" in /home/elviramodestconcept.com/public_html/wp-content/plugins/elementor/core/document-types/page-base.php:187. The stack trace indicates issues with the Elementor plugin.

Symptoms:
PHP Fatal error: Uncaught ValueError: Unknown format specifier "" and a 500 error in the console when trying to buy a product.

Questions:
How can I resolve the PHP Fatal error related to the unknown format specifier?
What steps should I take to fix the 500 error when purchasing a product?