backTrace

#0 /home/www/connections.unu.edu/releases/connections.unu.edu_current/sites/all/modules/civicrm/CRM/Core/Error.php(315): CRM_Core_Error::backtrace()
#1 /home/www/connections.unu.edu/releases/connections.unu.edu_current/sites/all/modules/civicrm/CRM/Utils/Type.php(229): CRM_Core_Error::fatal("10570... is not of the type Integer")
#2 /home/www/connections.unu.edu/releases/connections.unu.edu_current/sites/all/modules/civicrm/CRM/Mailing/Event/BAO/TrackableURLOpen.php(69): CRM_Utils_Type::escape("10570...", "Integer")
#3 /home/www/connections.unu.edu/releases/connections.unu.edu_current/sites/all/modules/civicrm/extern/url.php(25): CRM_Mailing_Event_BAO_TrackableURLOpen::track(NULL, "10570...")
#4 {main}