Oki So I have took 2020 Snapshot for tests on 1.14.4 and have end up with error
My procedure was checking for Acacia log but if there was none of that item in than it was checking for item with tag chunkGalena
however, I did add that item and tag but it still crashes
also here is Crash Log
https://pastebin.com/2XhGrWVv
it says that there is none a-z/0-9/._- character in resource location
PS: I also uploading my procedure and the part that makes the error is the one with Else If
minecraft:chunkGalena is not a valid tag name. When you use tags (>1.13), you need to follow naming conventions, which is expressed by the crash too:
You can not use uppercase letters in tag names.