Fatal error: Uncaught Error: Non-static method xajaxPluginManager::getInstance() cannot be called statically in /var/www/vhosts/sgwaibstadt.de/htdocs/include/includes/class/xajax.inc.php:89
Stack trace:
#0 /var/www/vhosts/sgwaibstadt.de/htdocs/include/includes/loader.php(13): require_once()
#1 /var/www/vhosts/sgwaibstadt.de/htdocs/index.php(41): require_once('...')
#2 {main}
thrown in /var/www/vhosts/sgwaibstadt.de/htdocs/include/includes/class/xajax.inc.php on line 89