Updated to 8.0, cron not working

[Square Wheels]

I have three sites, I updated them all to php 8.0.

I adjusted their cron jobs.

2 of the 3 sites are fine, one is saying 

Caching is not working correctly. Review your caching method configuration and adjust the settings as needed.

When I click the link it brings me to the datastore option.  Previously I had Redis, but I am not using it anymore.

I downloaded the new constants, but the error is still displayed.

I can send a screenshot of the cron in an email, I'd rather not post it here.

[Jim M]

Caching would not be related to CRON. If your constants.php does not have Redis present and your /datastore directory is writable, this warning can be cached so you will want to dismiss it and then see if it comes back. Please let us know 🙂 .

[Square Wheels]

1 hour ago, Jim M said:

this warning can be cached

I had cleared the system cache, it still showed.

I went and mowed the lawn, so it sat for a few hours, and it seems to be cleared.

Maybe part of your advice moving forward can be to have customers do yardwork - it must be related.