io.netty.channel.ConnectTimeoutException: connection timed out: /139.224.234.61:6379

This error message indicates that a connection attempt to a Redis server located at IP address 139.224.234.61 on port 6379 has timed out.

There are several reasons why this could happen, including:

1. Network connectivity issues: This could be due to a firewall blocking the connection, a misconfigured router, or a problem with your ISP.

2. Server overload: If the Redis server is overloaded with requests, it may not be able to respond to new connection requests in a timely manner.

3. Redis server not running: If the Redis server is not running or has crashed, it will not be able to accept new connections.

To resolve this issue, you can try the following:

1. Check your network connectivity: Make sure your network is working properly and there are no issues with your firewall or router.

2. Check Redis server status: Verify that the Redis server is running and functioning correctly.

3. Increase the connection timeout value: You can try increasing the timeout value for the connection attempt to give more time for the Redis server to respond.

4. Contact your system administrator or hosting provider: If none of the above solutions work, contact your system administrator or hosting provider for further assistance.