Fatal error: Uncaught TypeError: Argument 2 passed to ifndef() must be an instance of mixed, string given, called in /var/customers/webs/schlicke/includes/defines.php on line 8 and defined in /var/customers/webs/schlicke/includes/defines.php:334
Stack trace:
#0 /var/customers/webs/schlicke/includes/defines.php(8): ifndef('JTL_CHARSET', 'utf-8')
#1 /var/customers/webs/schlicke/includes/globalinclude.php(35): require_once('/var/customers/...')
#2 /var/customers/webs/schlicke/index.php(7): require('/var/customers/...')
#3 {main}
  thrown in /var/customers/webs/schlicke/includes/defines.php on line 334