My datapack is working correctly in singleplayer mode. But in multiplayer, it can't work. When i upload it on server, then server says that every file in datapack is completely malformed. Why and where it's malformed - i don't know.

In the previous report, the moderator said me, that datapack is "riddled in errors and other issues". But if it's really riddled in errors, then why it works fine in singleplayer mode? And if it's riddled in errors, then where are they?

For more information, watch this video - (1) Datapack Works Correctly - YouTube