Had about a dozen crashes on my server. My friend appears to be causing "Ticking Entities" whenever he battles Pokemon. Tried wiping his player & pokemon data but the issue persisted eventually. He logged in on a new account and it's since been fine, but I am hoping I could restore is player data still.

Another thing we tried: "We got him to function shortly by deleting all his pokemon data on the server, but eventually it happened again. Andy was the only person to use the pokemon editor on a pokemon on their team (lowered back levels to force evolve) so we're now guessing thats the cause? Now we've tried deleting his player data and pokemon data and restoring his team without the use of the pokemon editor."

That would eventually go on to fail as well. A handful of different variables that sets Andy apart from others on the server that we've theorized could've been the issue:
The use of pokemon editor to fix his cinderace
Spawning in pokemon generally
He's one of only a few server operators, although none of the others have had issues like this at all yet.

It appears he can safely walk around if he just doesn't battle when this is occurring, and it seems to be a rapid incline from the beginning where not every battle triggered it, to the stage we were when we kept crashing where every battle he entered crashed us.

https://pastebin.com/CeiRLAKe
https://pastebin.com/ibpk0LWZ
https://pastebin.com/WTdHt3qm

There are some crash reports, if it'd be helpful I can send logs from the crashes beforehand to maybe identify what made andy diffferent.

Side-note, the server has been a great deal of fun. My friends and viewers are all really enjoying it and I'm no exception. You guys do a great job <3

Hi there. I believe this is the same issue you posted in the Server owners discord. Were you able to resolve this? As primerib noted, Java 17 was likely the issue.