Mesh Operation Fail

I have an error on a project in which I am attempting to simulate air moving over group. I have one air volume and one solid volume.
Does anyone know how to fix this?
One or more cell zones do not intersect the flow region or the intersection results in a non-solid body. Cell zones must overlap with the flow region.

Thank you!

Hello mjans,

thanks for reaching out to us in the forum.
To better troubleshoot your simulation can you share the link to your project.

But based on your description this might help with your problem.

Best regards
Sebastian

Hello,

Thank you for the response. I made the project public, can you view it?

Thank you