darktable-generate-cache missing mandatory modules

I am in the process of generating thumbnails after migrating my photo collection to new NAS hardware. darktable-generate-cache worked fine in the past, and it appears to be running ATM (it will take a while to finish), but I get a lot of the messages below.
I am running version 3.5.0+2093~g8a7f44d35 compiled from the git repository (I generally pull and compile each week):

[_dev_auto_apply_presets] missing mandatory module rawprepare for image 65851
[_dev_auto_apply_presets] missing mandatory module temperature for image 65851
[_dev_auto_apply_presets] missing mandatory module highlights for image 65851
[_dev_auto_apply_presets] missing mandatory module demosaic for image 65851

I am not sure where I should be looking - ist is a version incompatablility for images edited on previous versions.

I would be grateful for any advice.

Peter