What do these messages mean?

@petermc Hello again.

Yes and it’s due to a change that happened in our pool api and the fix was released in testing channel just recently (shortly after the change that cause it):

The issue was diagnosed by forum member @kbogert in the following forum thread:

with an initial report and assistance from @KarstenV; and core code contributor @Flyer.

You will need to re-create that scheduled scrub job as then it will contain the new style pool api info.

Hope that helps.