Don't know if is possible, but if the game detects a datapack is invalid (like with json errors, etc), data loader should give up forcing the load of it and proceed with loading the rest of the packs.
The reason i'm asking this is because i forgot a comma in one of my datapacks without realizing, tried to load the game and it was crashing on the new world screen, without giving much hints of the source of the crash in the logs.