Error establishing a Redis connection

To reveal the error message, enable the debug configuration option.

Either Redis server is unreachable, or the WP_REDIS_CONFIG constant in the wp-config.php file is incorrectly configured.

• Is Redis server up and running?
• Is the correct host, port and scheme set?
• Is the WP_REDIS_CONFIG defined at the top of the wp-config.php?

For more information, please read the installation instructions.