Fatal error: Uncaught exception 'MongoException' with message 'Invalid object ID' in /home/rol2015/frontend2/code/controllers/page.php:77 Stack trace: #0 /home/rol2015/frontend2/code/controllers/page.php(77): MongoId->__construct('18') #1 [internal function]: Page->poll('18') #2 /home/rol2015/frontend2/code/controllers/page.php(14): call_user_func_array(Array, Array) #3 /home/rol2015/frontend2/ci/core/CodeIgniter.php(325): Page->_remap('poll', Array) #4 /home/rol2015/frontend2/index.php(200): require_once('/home/rol2015/f...') #5 {main} thrown in /home/rol2015/frontend2/code/controllers/page.php on line 77