Ticking Memory Connection Problem?

[Davy2011]

So i've had this server from the looks for quite some years and it ran fine. But now when I try to play it, it starts up normally, then going to the world to boot it up, then BAM! It closes with "server closed", then just crashes just like that and throws me this error. I tried it with and without Optifine, yet it still throws the same complaint at me. I tried to remove any persky mods that was causing the problem, but nothing. I even updated every mod that was outdated using a mod that detects whats outdated and whatnot, yet it still did the same crash to me. Anything to do? And yes, I know its talking about Optifine not being compatible, but I don't know why it still crashes even with it removed.

crash-2020-08-18_02.51.45-server.txt

[Lord Ptolemy]

Not a launcher issue. Locked.