php error on www.wileyfox.com

error.txt

Notice: Undefined index: access_token  in /var/www/production/public/app/code/local/Wcm/Iqcloud/Helper/Api.php on line 72

#0 /var/www/production/public/app/code/local/Wcm/Iqcloud/Helper/Api.php(72): mageCoreErrorHandler(8, 'Undefined index...', '/var/www/produc...', 72, Array)
#1 /var/www/production/public/app/code/local/Wcm/Iqcloud/Helper/Api.php(353): Wcm_Iqcloud_Helper_Api->getAccessToken()
#2 /var/www/production/public/app/code/local/Wcm/Iqcloud/Model/Observer.php(182): Wcm_Iqcloud_Helper_Api->api_update_customer(Object(Varien_Object))
#3 /var/www/production/public/app/code/core/Mage/Core/Model/App.php(1358): Wcm_Iqcloud_Model_Observer->afterCustomerSave(Object(Varien_Event_Observer))
#4 /var/www/production/public/app/code/core/Mage/Core/Model/App.php(1337): Mage_Core_Model_App->_callObserverMethod(Object(Wcm_Iqcloud_Model_Observer), 'afterCustomerSa...', Object(Varien_Event_Observer))
#5 /var/www/production/public/app/Mage.php(448): Mage_Core_Model_App->dispatchEvent('customer_save_a...', Array)
#6 /var/www/production/public/app/code/core/Mage/Core/Model/Abstract.php(466): Mage::dispatchEvent('customer_save_a...', Array)
#7 /var/www/production/public/app/code/core/Mage/Core/Model/Abstract.php(319): Mage_Core_Model_Abstract->_afterSave()
#8 /var/www/production/public/app/code/local/Wcm/Checkout/Model/Checkout.php(16): Mage_Core_Model_Abstract->save()
#9 /var/www/production/public/app/code/local/Wcm/Checkout/controllers/SecureController.php(619): Wcm_Checkout_Model_Checkout->saveBilling(Array, false)
#10 /var/www/production/public/app/code/core/Mage/Core/Controller/Varien/Action.php(418): Wcm_Checkout_SecureController->billingPostAction()
#11 /var/www/production/public/app/code/core/Mage/Core/Controller/Varien/Router/Standard.php(254): Mage_Core_Controller_Varien_Action->dispatch('billingPost')
#12 /var/www/production/public/app/code/core/Mage/Core/Controller/Varien/Front.php(172): Mage_Core_Controller_Varien_Router_Standard->match(Object(Mage_Core_Controller_Request_Http))
#13 /var/www/production/public/app/code/core/Mage/Core/Model/App.php(365): Mage_Core_Controller_Varien_Front->dispatch()
#14 /var/www/production/public/app/Mage.php(684): Mage_Core_Model_App->run(Array)
#15 /var/www/production/public/index.php(94): Mage::run('', 'store')
#16 {main}