When i try to enable the Datapack in a singleplayer world it works just fine, the problems happens when i try to enable it in our server, it starts but gives this error and the creepers do not drop anything, not even gunpowder

[Worker-ResourceReload-75/ERROR]: Couldn't parse element minecraft:loot_table/minecraft:entities/creeper - Failed to parse either. First: Failed to get element metallica:fadetoblackmetallica; Second: Cannot parse as key without registry missed input: {"minecraft:jukebox_playable":{"song":"metallica:fadetoblackmetallica"}}; Failed to parse either. First: Failed to get element metallica:entersandmanmetallica; Second: Cannot parse as key without registry missed input: {"minecraft:jukebox_playable":{"song":"metallica:entersandmanmetallica"}}; Failed to parse either. First: Failed to get element metallica:nothingelsemattersmetallica; Second: Cannot parse as key without registry missed input: {"minecraft:jukebox_playable":{"song":"metallica:nothingelsemattersmetallica"}}; Failed to parse either. First: Failed to get element metallica:theunforgivenmetallica; Second: Cannot parse as key without registry missed input: {"minecraft:jukebox_playable":{"song":"metallica:theunforgivenmetallica"}}; Failed to parse either. First: Failed to get element metallica:masterofpuppetsmetallica; Second: Cannot parse as key without registry missed input: {"minecraft:jukebox_playable":{"song":"metallica:masterofpuppetsmetallica"}}; Failed to parse either. First: Failed to get element metallica:onemetallica; Second: Cannot parse as key without registry missed input: {"minecraft:jukebox_playable":{"song":"metallica:onemetallica"}}; Failed to parse either. First: Failed to get element metallica:seekanddestroymetallica; Second: Cannot parse as key without registry missed input: {"minecraft:jukebox_playable":{"song":"metallica:seekanddestroymetallica"}}; Failed to parse either. First: Failed to get element metallica:forwhomthebelltollsmetallica; Second: Cannot parse as key without registry missed input: {"minecraft:jukebox_playable":{"song":"metallica:forwhomthebelltollsmetallica"}}

looks kinda weird, failed to parse a creeper? try it on a fabric server with no mods, if that works then proceed with deleting and restoring mods until you stumble onto a mod that makes it break. im assuming you have the latest release since it was a month ago and a month ago was the june 21 update.

it works on paper, bukkit, spigot, vanilla servers just fine.

I have the same problem but with a vanilla 1.21 server