read error on connection

#0 /var/www/html/spares/vendor/colinmollenhour/credis/Client.php(608): Credis_Client->__call('select', Array)
#1 /var/www/html/spares/vendor/colinmollenhour/credis/Client.php(467): Credis_Client->select(1)
#2 /var/www/html/spares/vendor/colinmollenhour/credis/Client.php(781): Credis_Client->connect()
#3 /var/www/html/spares/lib/Cm/Cache/Backend/Redis.php(198): Credis_Client->__call('hGet', Array)
#4 /var/www/html/spares/lib/Zend/Cache/Core.php(306): Cm_Cache_Backend_Redis->load('mage_LAYOUT_1D9...', false)
#5 /var/www/html/spares/lib/Varien/Cache/Core.php(158): Zend_Cache_Core->load('mage_LAYOUT_1D9...', false, false)
#6 /var/www/html/spares/app/code/core/Mage/Core/Model/Cache.php(379): Varien_Cache_Core->load('LAYOUT_1D93BD1C...')
#7 /var/www/html/spares/app/code/core/Mage/Core/Model/App.php(1153): Mage_Core_Model_Cache->load('LAYOUT_1d93bd1c...')
#8 /var/www/html/spares/app/code/core/Mage/Core/Model/Layout/Update.php(181): Mage_Core_Model_App->loadCache('LAYOUT_1d93bd1c...')
#9 /var/www/html/spares/app/code/core/Mage/Core/Model/Layout/Update.php(219): Mage_Core_Model_Layout_Update->loadCache()
#10 /var/www/html/spares/app/code/core/Mage/Core/Controller/Varien/Action.php(306): Mage_Core_Model_Layout_Update->load()
#11 /var/www/html/spares/app/code/core/Mage/Cms/Helper/Page.php(109): Mage_Core_Controller_Varien_Action->loadLayoutUpdates()
#12 /var/www/html/spares/app/code/core/Mage/Cms/Helper/Page.php(52): Mage_Cms_Helper_Page->_renderPage(Object(Mage_Cms_IndexController), 'no-route')
#13 /var/www/html/spares/app/code/core/Mage/Cms/controllers/IndexController.php(75): Mage_Cms_Helper_Page->renderPage(Object(Mage_Cms_IndexController), 'no-route')
#14 /var/www/html/spares/app/code/core/Mage/Core/Controller/Varien/Action.php(418): Mage_Cms_IndexController->noRouteAction()
#15 /var/www/html/spares/app/code/core/Mage/Core/Controller/Varien/Router/Standard.php(254): Mage_Core_Controller_Varien_Action->dispatch('noRoute')
#16 /var/www/html/spares/app/code/core/Mage/Core/Controller/Varien/Front.php(172): Mage_Core_Controller_Varien_Router_Standard->match(Object(Mage_Core_Controller_Request_Http))
#17 /var/www/html/spares/app/code/core/Mage/Core/Model/App.php(365): Mage_Core_Controller_Varien_Front->dispatch()
#18 /var/www/html/spares/app/Mage.php(694): Mage_Core_Model_App->run(Array)
#19 /var/www/html/spares/index.php(83): Mage::run('base', 'website')
#20 {main}