Cannot send headers; headers already sent in /home/exclamsportcom/public_html/app/code/community/VladimirPopov/WebForms/Model/Observer.php, line 125

#0 /home/exclamsportcom/public_html/lib/Zend/Controller/Response/Abstract.php(115): Zend_Controller_Response_Abstract->canSendHeaders(true)
#1 /home/exclamsportcom/public_html/app/code/core/Mage/Cms/controllers/IndexController.php(71): Zend_Controller_Response_Abstract->setHeader('HTTP/1.1', '404 Not Found')
#2 /home/exclamsportcom/public_html/app/code/core/Mage/Core/Controller/Varien/Action.php(419): Mage_Cms_IndexController->noRouteAction()
#3 /home/exclamsportcom/public_html/app/code/core/Mage/Core/Controller/Varien/Router/Standard.php(254): Mage_Core_Controller_Varien_Action->dispatch('noRoute')
#4 /home/exclamsportcom/public_html/app/code/core/Mage/Core/Controller/Varien/Front.php(176): Mage_Core_Controller_Varien_Router_Standard->match(Object(Mage_Core_Controller_Request_Http))
#5 /home/exclamsportcom/public_html/app/code/core/Mage/Core/Model/App.php(354): Mage_Core_Controller_Varien_Front->dispatch()
#6 /home/exclamsportcom/public_html/app/Mage.php(683): Mage_Core_Model_App->run(Array)
#7 /home/exclamsportcom/public_html/index.php(87): Mage::run('fr_fr_pro', 'store')
#8 {main}