Yves

Problem: Whe trying to opening a site with WPML you get this error Parse error: syntax error, unexpected 'class' (T_CLASS), expecting identifier (T_STRING) or variable (T_VARIABLE) or '{' or '$' in /wp-content/plugins/sitepress-multilingual-cms/inc/functions.php on line 810

Solution: this is caused by using a PHP version older than 5.6.

Relevant Documentation: https://wpml.org/errata/parse-error-syntax-error-unexpected-t_class-and-other-errors-when-using-php-versions-older-than-5-6/