Warning: Undefined variable $data in /var/www/vhosts/klickkonzept.cc/tr.klickkonzept.cc/src/Model/Builder.php on line 200

Fatal error: Uncaught TypeError: http_build_query(): Argument #1 ($data) must be of type array, null given in /var/www/vhosts/klickkonzept.cc/tr.klickkonzept.cc/src/Model/Builder.php:200 Stack trace: #0 /var/www/vhosts/klickkonzept.cc/tr.klickkonzept.cc/src/Model/Builder.php(200): http_build_query() #1 /var/www/vhosts/klickkonzept.cc/tr.klickkonzept.cc/src/Controller/Tracking/Visitor.php(94): Apollo\Model\Builder::appendQuery() #2 [internal function]: Apollo\Controller\Tracking\Visitor->index() #3 /var/www/vhosts/klickkonzept.cc/tr.klickkonzept.cc/app/Foundation/Dependency/Creator.php(95): ReflectionMethod->invokeArgs() #4 /var/www/vhosts/klickkonzept.cc/tr.klickkonzept.cc/app/Foundation/Kernel.php(103): Atlas\Foundation\Dependency\Creator->method() #5 /var/www/vhosts/klickkonzept.cc/tr.klickkonzept.cc/app/bootstrap.php(27): Atlas\Foundation\Kernel->handle() #6 /var/www/vhosts/klickkonzept.cc/tr.klickkonzept.cc/public/index.php(2): require_once('...') #7 {main} thrown in /var/www/vhosts/klickkonzept.cc/tr.klickkonzept.cc/src/Model/Builder.php on line 200