500 Internal Server Error

Call to a member function quote() on null (0)

#0 /var/www/html/sites/prohaat/includes/functions.php(61): CM\Database\CSql->quote()
#1 /var/www/html/sites/prohaat/controllers/PageController.php(134): getItemWithPermalink()
#2 [internal function]: PageController->proPage()
#3 /var/www/html/CM/Core/Dispatcher.php(148): call_user_func_array()
#4 /var/www/html/CM/Core/Dispatcher.php(128): CM\Core\Dispatcher->invokeMethod()
#5 /var/www/html/CM/Net/Router.php(114): CM\Core\Dispatcher->execute()
#6 /var/www/html/CM/Engine.php(315): CM\Net\Router->route()
#7 [internal function]: CM\Engine->_start()
#8 /var/www/html/CM/Core/Dispatcher.php(145): call_user_func_array()
#9 /var/www/html/CM/Core/Dispatcher.php(128): CM\Core\Dispatcher->invokeMethod()
#10 /var/www/html/CM/Core/Dispatcher.php(52): CM\Core\Dispatcher->execute()
#11 /var/www/html/CM/Engine.php(119): CM\Core\Dispatcher->run()
#12 /var/www/html/CM/CM.php(66): CM\Engine->__call()
#13 /var/www/html/sites/prohaat/index.php(9): CM::__callStatic()
#14 {main}