Invalid HTTP response code

#0 /var/www/bedsareuzzz.co.uk/htdocs/lib/Zend/Controller/Response/Abstract.php(150): Zend_Controller_Response_Abstract->setHttpResponseCode(0)
#1 /var/www/bedsareuzzz.co.uk/htdocs/app/code/core/Mage/Core/Controller/Response/Http.php(107): Zend_Controller_Response_Abstract->setRedirect('', 0)
#2 /var/www/bedsareuzzz.co.uk/htdocs/app/code/community/Optimiseweb/Redirects/Model/Redirector.php(139): Mage_Core_Controller_Response_Http->setRedirect('', 0)
#3 /var/www/bedsareuzzz.co.uk/htdocs/app/code/community/Optimiseweb/Redirects/Model/Redirector.php(44): Optimiseweb_Redirects_Model_Redirector->doRedirects1('https://www.bed...')
#4 /var/www/bedsareuzzz.co.uk/htdocs/app/code/core/Mage/Core/Model/App.php(1339): Optimiseweb_Redirects_Model_Redirector->doRedirects(Object(Varien_Event_Observer))
#5 /var/www/bedsareuzzz.co.uk/htdocs/app/code/core/Mage/Core/Model/App.php(1318): Mage_Core_Model_App->_callObserverMethod(Object(Optimiseweb_Redirects_Model_Redirector), 'doRedirects', Object(Varien_Event_Observer))
#6 /var/www/bedsareuzzz.co.uk/htdocs/app/Mage.php(448): Mage_Core_Model_App->dispatchEvent('controller_acti...', Array)
#7 /var/www/bedsareuzzz.co.uk/htdocs/app/code/core/Mage/Core/Controller/Varien/Action.php(527): Mage::dispatchEvent('controller_acti...', Array)
#8 /var/www/bedsareuzzz.co.uk/htdocs/app/code/core/Mage/Core/Controller/Front/Action.php(64): Mage_Core_Controller_Varien_Action->preDispatch()
#9 /var/www/bedsareuzzz.co.uk/htdocs/app/code/core/Mage/Core/Controller/Varien/Action.php(407): Mage_Core_Controller_Front_Action->preDispatch()
#10 /var/www/bedsareuzzz.co.uk/htdocs/app/code/core/Mage/Core/Controller/Varien/Router/Standard.php(254): Mage_Core_Controller_Varien_Action->dispatch('noRoute')
#11 /var/www/bedsareuzzz.co.uk/htdocs/app/code/core/Mage/Core/Controller/Varien/Front.php(172): Mage_Core_Controller_Varien_Router_Standard->match(Object(Mage_Core_Controller_Request_Http))
#12 /var/www/bedsareuzzz.co.uk/htdocs/app/code/core/Mage/Core/Model/App.php(354): Mage_Core_Controller_Varien_Front->dispatch()
#13 /var/www/bedsareuzzz.co.uk/htdocs/app/Mage.php(684): Mage_Core_Model_App->run(Array)
#14 /var/www/bedsareuzzz.co.uk/htdocs/index.php(88): Mage::run('default', 'store')
#15 {main}