The factorio-data repo looks to be mostly updated to the latest 2.1.* data, however it contains several old files that should be removed, validated against the files present in my local install.
Specifically the ones I found are under the quality mod - data-updates.lua and prototypes/recycling.lua. These look like they are probably from the recycler stuff before it was moved from quality into its own mod. The recycling file even references recipe.category, which no longer exists.
[2.1.10] Factorio Data repo contains old files
Re: [2.1.10] Factorio Data repo contains old files
Thanks for the report, for the state of the repo this was fixed manually, and for future releases this should be handled correctly.
ovo

