Issue with Fabric modloader.

Hey.
I'm using Fabric Modloader (fabric-loader-0.8.8+build.202-1.16.1) for 1.16.1. Loading up the server and exploring worlds is not a problem, however when any of the modded features tries to load it crashes. This includes exploring until the mod's blocks/biomes are loaded into chunks, and turning inventory pages to load the item tabs. It doesn't even load, the server crashes before anything shows up. Am I missing a step, or is it simply a Fabric issue?

EDIT:
Mod list.
appleskin-mc1.16-fabric-1.0.11.jar
better-nether-3.2.0.jar

darkness-mc116-1.5.42.jar

fabric-api-0.14.0+build.371-1.16.jar

fatxporbs-0.0.7+1.16-rc1.jar

immersive-portals-0.12(forMc1.16.1withFabric).jar

phosphor-fabric-mc1.16.1-0.6.0+build.7.jar

terrestria-2.0.2+build.29.jar

traverse-2.2.12+build.24.jar

Quote from Amgelo563

You may want to report that to Fabric support, as Aternos is unable to repair that.

When I go into single player with the same exact version, loader, and mods it works just fine. This isn't an issue with Fabric's loader, it's either an issue with Fabric's server or Aternos. I'd like to figure out which, and I'm not sure where to start looking.

Quote from Roman

Share the server log using the share button on the log page.

Here you go.