Error establishing a Redis connection

protocol error, got 'u' as reply type byte

WordPress is unable to establish a connection to Redis. This means that the connection information in your wp-config.php file are incorrect, or that the Redis server is not reachable.

• Is the correct Redis host and port set?
• Is the Redis server running?

If you need help, please read the installation instructions.

To disable Redis, delete the object-cache.php file in the /wp-content/ directory.