Redis command timed out; nested exception is io.lettuce.core.RedisCommandTimeoutException: Command timed out after 12 second(s)

This error message indicates that a Redis command has taken too long to execute and has timed out. The timeout duration in this case is 12 seconds.

There are a few potential reasons why this error might occur:

1. The Redis server is overloaded or experiencing high traffic, causing commands to take longer than usual to execute. This can be resolved by optimizing the Redis server and/or increasing its resources.

2. The command being executed is particularly complex or resource-intensive, causing it to take longer than the timeout duration. In this case, you may need to optimize the command or increase the timeout duration to accommodate it.

3. There is a network issue or connectivity problem between the client and the Redis server, causing delays or timeouts. You may need to troubleshoot your network infrastructure to resolve this issue.

To resolve this error, you can try the following:

- Increase the timeout duration for Redis commands to allow for longer execution times.
- Optimize the Redis server to improve performance and reduce command execution times.
- Troubleshoot any network or connectivity issues that may be causing delays or timeouts.