FastCGI sent in stderr: "PHP message: RedisException: socket error on read socket
Stack trace:
#0 /var/www/wordops.net/htdocs/wp-content/object-cache.php(441): Redis->ping()
#1 /var/www/wordops.net/htdocs/wp-content/object-cache.php(173): WP_Object_Cache->__construct()
#2 /var/www/wordops.net/htdocs/wp-includes/load.php(683): wp_cache_init()
#3 /var/www/wordops.net/htdocs/wp-settings.php(131): wp_start_object_cache()
#4 /var/www/wordops.net/wp-config.php(88): require_once('/var/www/wordops...')
#5 /var/www/wordops.net/htdocs/wp-load.php(42): require_once('/var/www/wordops...')
#6 /var/www/wordops.net/htdocs/wp-admin/admin-ajax.php(22): require_once('/var/www/wordops...')
#7 {main}" while reading response header from upstream, client: 136.158.33.208, server: wordops.net, request: "POST /wp-admin/admin-ajax.php HTTP/1.1", upstream:
i see this error log on my wordpress site