Pre-generate world for 20 hours using [Worldborder 1.9.0|https://www.spigotmc.org/resources/worldborder.60905/update?update=244392].

After going to sleep at the 21st hour, I come back to find the server has crashed.

After trying to switch the jar around, the server still crashes after trying to generate a chunk in the 270,000s.

Logs

[Spigot-8043ebc-dd99c5b|https://hastebin.com/resiqiviqa.md]

[paper-21|https://hastebin.com/usuceqadux.md]