Redis connection failed in Object Cache despite PHP-redis being active

Hello,

I am having trouble connecting Redis to the Object Cache in W3 Total Cache. Despite verifying my server configuration, I keep receiving “Test Failed” errors.

What I have confirmed:

PHP-Redis Extension: Installed and active (php -m | grep redis returns positive).
Redis Service: The Redis server is running and responds with PONG when pinged via redis-cli.
Connection Details: I have tried using 127.0.0.1:6379 and localhost:6379, but the result is the same.

Please refer the following screenshots:

Could you please advise if there is a specific configuration or debugging step I might be missing for W3TC to recognize the Redis instance?

Best regards,