This thread is resolved. Here is a description of the problem and solution.
Problem: T_CLASS, expecting T_STRING or T_VARIABLE or '$' in /disk_1/www/cz/reklamni-tkanicky/www/wp-content/plugins/sitepress-multilingual-cms/inc/functions.php on line 810 Solution: The client was using PHP 5.3, which is below our and WordPress minimum requirements, so updating to the latest PHP versions resolved the issue. Relevant Documentation: https://wpml.org/home/minimum-requirements/
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