I'm running single-player testing out a custom mod pack, and it appears that Terralith villages have issues filling Lootr's chest. Is there a known incompatibility between lootr and terralith?

From Latest.log:
[11:21:18] [Server thread/ERROR]: Unable to fill loot chest in ResourceKey[minecraft:dimension / minecraft:overworld] at class_2338{x=-624, y=62, z=346} as the loot table 'terralith:village/desert/shepherd' couldn't be resolved! Please search the loot table in latest.log to see if there are errors in loading.
[11:21:18] [Render thread/INFO]: [System] [CHAT] The loot table for this container [terralith:village/desert/shepherd] resolved to empty and loot could not be generated. Check your latest.log for errors.

There were no errors other than this in my latest.log, same thing for 'terralith:village/desert/fisherman'

This is an issue with Terralith, rather than Lootr. What is happening here is that the loot tables referenced in the structure don't actually exist in the Terralith data pack.

It's possible that they've been moved or renamed but the structures then haven't been updated.

I'd recommend making sure you have the latest version of Terralith and, if so, reporting the issue on their GitHub.