read error on connection

#0 /data/webroot/classes/Artron/Redis.php(40): Redis->auth('Artron@artron20...')
#1 /data/webroot/classes/Artron/Redis.php(27): Artron_Redis->_connect()
#2 /data/webroot/classes/Artron/Redis.php(78): Artron_Redis->__construct('191redis_w')
#3 /data/webroot/beian.artron.net/application/controllers/works.php(297): Artron_Redis::getInstance('191redis_w')
#4 [internal function]: Works->index('562442')
#5 /data/webroot/CI/Ci_system/core/CodeIgniter.php(362): call_user_func_array(Array, Array)
#6 /data/webroot/beian.artron.net/ciindex.php(223): require_once('/data/webroot/C...')
#7 {main}