read error on connection

#0 /var/www/accessorygeeks_1.9.1.1.10/lib/Cm/Cache/Backend/Redis.php(169): Credis_Client->__call('hGet', Array)
#1 /var/www/accessorygeeks_1.9.1.1.10/lib/Cm/Cache/Backend/Redis.php(169): Credis_Client->hGet('zc:k:420_APP_B1...', 'd')
#2 /var/www/accessorygeeks_1.9.1.1.10/lib/Zend/Cache/Core.php(306): Cm_Cache_Backend_Redis->load('420_APP_B1FB6E8...', false)
#3 /var/www/accessorygeeks_1.9.1.1.10/lib/Varien/Cache/Core.php(158): Zend_Cache_Core->load('APP_B1FB6E8F132...', false, false)
#4 /var/www/accessorygeeks_1.9.1.1.10/app/code/core/Mage/Core/Model/Cache.php(379): Varien_Cache_Core->load('APP_B1FB6E8F132...')
#5 /var/www/accessorygeeks_1.9.1.1.10/app/code/core/Mage/Core/Model/App.php(1134): Mage_Core_Model_Cache->load('app_b1fb6e8f132...')
#6 /var/www/accessorygeeks_1.9.1.1.10/app/code/core/Mage/Core/Model/Resource/Db/Collection/Abstract.php(675): Mage_Core_Model_App->loadCache('app_b1fb6e8f132...')
#7 /var/www/accessorygeeks_1.9.1.1.10/lib/Varien/Data/Collection/Db.php(726): Mage_Core_Model_Resource_Db_Collection_Abstract->_loadCache('SELECT `main_ta...')
#8 /var/www/accessorygeeks_1.9.1.1.10/app/code/core/Mage/Core/Model/Resource/Db/Collection/Abstract.php(521): Varien_Data_Collection_Db->_fetchAll('SELECT `main_ta...', Array)
#9 /var/www/accessorygeeks_1.9.1.1.10/lib/Varien/Data/Collection/Db.php(566): Mage_Core_Model_Resource_Db_Collection_Abstract->getData()
#10 /var/www/accessorygeeks_1.9.1.1.10/app/code/core/Mage/Core/Model/Resource/Website/Collection.php(137): Varien_Data_Collection_Db->load(false, false)
#11 /var/www/accessorygeeks_1.9.1.1.10/lib/Varien/Data/Collection.php(729): Mage_Core_Model_Resource_Website_Collection->load()
#12 /var/www/accessorygeeks_1.9.1.1.10/app/code/core/Mage/Core/Model/App.php(634): Varien_Data_Collection->getItemById('0')
#13 /var/www/accessorygeeks_1.9.1.1.10/app/code/core/Mage/Core/Model/App.php(466): Mage_Core_Model_App->_initStores()
#14 /var/www/accessorygeeks_1.9.1.1.10/app/code/core/Mage/Core/Model/App.php(349): Mage_Core_Model_App->_initCurrentStore('default', 'store')
#15 /var/www/accessorygeeks_1.9.1.1.10/app/Mage.php(684): Mage_Core_Model_App->run(Array)
#16 /var/www/source/index.php(146): Mage::run('default', 'store')
#17 {main}