I used the 1.5.3.1 version before without problems. After i updated 1.5.3.2 this issue occure. By Updating i deleted the world and the aether related configs, to avoid corruption (Also i deleted everything and installed new). The server is on ApexHosting and run the new forge 14.23.5.2855.
You don't actually seem to have reinstalled Aether correctly, I can't see it in your mods list. The error is likely because the Aether addons can't find the mod.
This i get in my server console: https://pastebin.com/HS7GfUQ1
I used the 1.5.3.1 version before without problems. After i updated 1.5.3.2 this issue occure. By Updating i deleted the world and the aether related configs, to avoid corruption (Also i deleted everything and installed new). The server is on ApexHosting and run the new forge 14.23.5.2855.
Here is the Crashlog https://pastebin.com/DrmzF9wx