Hi there,
we had the same issue on 2 different websites. Maybe this can help you solve it: First thing first, make sure Elementor is updated, then go back to your wp-config.php file and active the debugging mode like this. It just takes a few minutes.
define( ‘WP_DEBUG’, true );
define(‘WP_DEBUG_LOG’, true);
define(‘WP_DEBUG_DISPLAY’, false);
@ini_set(‘display_errors’, 0);