When the game can't parse a predicate in a data pack, it will show the following error:
Couldn't parse loot table namespace:fooIf there is both a loot table and a predicate with that name, this can lead to confusion.
MC-169471
Predicate errors show up as "loot table" in the log
Open
10
(Unassigned)
Confirmed
Platform
Low
Commands
1.15.1, 1.15.2, 20w07a, 20w14a, 20w16a, ..., 20w22a, 1.16 Pre-release 2, 1.16 Pre-release 3, 1.16.2 Release Candidate 1, 1.16.3
Retrieved
Confirmed. I attached a test datapack.