Server not starting. Stuck on [19:08:51]: Preparing spawn area: 0%

Hello, i am here with a problem. My server does not start, started the server on snapshot 23w17a, played on it, then it automatically updated the version to 23w18a, and from this time the server does not start. I dont know if it is some cursed block on the spawn, or the updated version of the server does not want tou start the world from older snapshot, i would love some help.

[19:08:36] [Worker-Main-1/INFO]: Preparing spawn area: 0%

it is: filip11111.aternos.me

Ok, sorry for the logs, thanks for the tip

Here is the log: https://mclo.gs/xI3th2E

What can i do to help it ?

If i do backup, and then generate new world, do i lose my old world and items ?

Ok, does work with a new world. Is there a way to setting the server back to snapshot 23w17a so it works, and turn off the auto update ?

I downloaded the world, but the world generated in snapshot 23w17a doesnt want to work on the newer one

still same problem : https://mclo.gs/K584FHM with the old world

And is there a way to update the world to the newer wersion of snapshot?