latest.log

Please provide the crash log as well :)

latest.log

Ever since I added this mod and a 2 more server kept crashing
First error was something like overflowstack eror and I deleted the portals mod which fixed that then I deleted the other mod and the only one left is the Atum 2 which keeps overloading my server for some reason and crashing it but this could be a forge thing I guess I don't know

That is still your latest.log.
I wanted your crash report, which you can find in: (According to your latest.log)
This crash report has been saved to: D:\Games.minecraft\New Begginings.\crash-reports\crash-2020-07-11_16.44.21-server.txt

crash-2020-07-11_16.44.21-server.txt
Here

crash-2020-07-11_16.43.21-server.txt
Its that problem or this "exception in server tick loop"

It does not necessarily have anything to do with Atum. It could though for sure (At least the one mentioning WorldInfo). How much RAM are you giving your server? And since you're running this on your own machine - how much do you have in total?

7GB and 8 in total but lag wasn't a problem before I added the mod

And I doubt it uses that much since I don't have any performance problems

You use 7GB for the server, while running your modpack too? That's gonna be an issue, try giving them both 4 GB (Or just below)

4gb for my client and 4 in the arguement for the server?

Yes

It doesn't look like it's atum this time
crash-2020-07-11_17.28.07-server.txt
Maybe revert to older forge version?

It could still be Atum. Does it happen when you sleep, or change the time in some way?

They slept yes

Noticed you had Morpheus installed, could I get you to try removing that?

I deleted morpheus and this is the crash log after starting a server without morpheus
crash-2020-07-12_16.16.56-server.txt

The watchdogs crashes is related to your computer not being able to handle the server, nothing to do with Atum.

Yeah but I have 79 mods now and before I added Atum I had 82 and didn't have these kinds of problems.
Server never lagged nor crashed

It might just have pushed it over what it was capable of running.
Also does this happen on startup, or after the server have started?

It happens after 1-2 min the server had already been running

Does it happen if no players are in Atum?

Atum is deleted from the mods

And the crash you linked before still happens?

Indeed

let me check something real quick

I'm very confused why you're linking that crash then after you've removed Atum? There is no way Atum can cause a crash, while not being installed.

I dunno
Sorry for your time

I'll investigate the possible issue with Morpheus, which would be causing the WorldInfo crash.
Closing this for now

Actually, Atum can indeed trigger this crash even after removing the mod, due to the way vanilla / Forge work (or don't work) with DimensionData: Here's why... https://forums.minecraftforge.net/topic/88493-game-crashing-upon-opening-world-server-tick-loop-error/

The data that the mod adds doesn't get removed when the mod is removed.

Thanks for looking into it @Vaelzan! Atum does indeed save data to the dimension, the same way vanilla saves data bout the ender dragon fight.
Doesn't look like the PR that diesieben mentioned, have been made yet though.