Error establishing a redis connection

Hello, I often see this page:

despite this in the wp-config.php file:

define( 'WP_REDIS_HOST', '127.0.0.1' );
define( 'WP_REDIS_PORT', 6379 );
define( 'WP_REDIS_DATABASE', 0 );
define( 'WP_REDIS_PREFIX', '****-****' );
define( 'WP_REDIS_TIMEOUT', 300 );
define( 'WP_REDIS_READ_TIMEOUT', 300 );
define( 'WP_REDIS_DISABLE_GROUP_FLUSH', true );

Do you have a solution? Thanks in advance.