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XF 1.2 Database Error on Registration

Neal

Well-known member
#1
When someone tries to register they are shown a database error message. I'm getting the following error showing in the server log. I've disabled add-ons but it still continues:

Zend_Cache_Exception: Datas must be string or set automatic_serialization = true - library/Zend/Cache.php:209
Generated By: Unknown Account, 2 minutes ago
#0 /***********/public_html/library/Zend/Cache/Core.php(360): Zend_Cache::throwException('Datas must be s...')
#1 /***********/public_html/library/XenForo/Model/SpamPrevention.php(457): Zend_Cache_Core->save(1, 'stopForumSpam_1...', Array, 3600)
#2 /***********/public_html/library/XenForo/Model/SpamPrevention.php(146): XenForo_Model_SpamPrevention->_cacheRegistrationDecision('stopForumSpam_1...', 1)
#3 /***********/public_html/library/XenForo/Model/SpamPrevention.php(31): XenForo_Model_SpamPrevention->_checkSfsResult(Array, Object(Zend_Controller_Request_Http))
#4 /***********/public_html/library/XenForo/Model/SpamPrevention.php(23): XenForo_Model_SpamPrevention->_allowRegistration(Array, Object(Zend_Controller_Request_Http))
#5 /***********/public_html/library/XenForo/ControllerPublic/Register.php(267): XenForo_Model_SpamPrevention->allowRegistration(Array, Object(Zend_Controller_Request_Http))
#6 /***********/public_html/library/XenForo/FrontController.php(335): XenForo_ControllerPublic_Register->actionRegister()
#7 /***********/public_html/library/XenForo/FrontController.php(132): XenForo_FrontController->dispatch(Object(XenForo_RouteMatch))
#8 /***********/public_html/index.php(13): XenForo_FrontController->run()
#9 {main}