Server Crashes When Starting Up in PaperMC

My server crashes upon start up when using PaperMC software, but works normally when using Vanilla. It hasn't happened before like this.

https://mclo.gs/ImiQLeR

Here is the link to the logs. It works previously even with the "World 'world_the_end' is a duplicate of another world and has been prevented from loading." error. I dont know why it crashes now.