While starting my temp server on my PC (using it to get stuff setup), I encountered several instances of a parsing error that seems to involve the advancements system.
I did some research but I could not find much that related to my problem, I found similar issues and it said something about a mod adding/removing stuff and screwing everything up, but tbh I have no idea and am just looking for some insight. Any questions feel free to let me know and I am looking forward to any help I can get!
You may well get the same cascade of warnings even without SpongeForge - see if that is the case. Sometimes mods override advancements / recipes in less than ideal ways, and the string of errors may not actually result in anything wrong in-game. (Harvestcraft used to do this a lot).
The main question to ask is, does it cause malfunctions on the server?
You might have problems with mod config files, so you could try re-uploading or regenerating them. But if it’s not SpongeForge at the root of your problems, then you’re best advised to seek help from the mod pack devs.
It does not seem to have an impact on the server, I have some tick issues with the server running behind but that i’m 90% sure is because of my machine being a bit slow. I will get in touch with the modpack authors and see what they think and do some more googling lol. I appreciate the help!