Sorry, this is a machine translation so it may not be accurate.

Crash report
https://api.mclo.gs/1/raw/GKZGiy4

This is the text that appears on the end screen.
(The game crashed: mouseclicked event handler
Error: java.lang.ArrayIndexOutOfBoundsException: Index 1 out of bounds for length 1)

Try deleting your config file and have it regenerate. I believe an error may have happened when updating the mod since I added 2 new config options.

I tried that, but the same error occurred.
https://api.mclo.gs/1/raw/983Gfph

Does Pure Suffering work correctly by itself?

This mod alone was safe to start. Could the crash be caused by lostcities or embeddium or something like that?

Its clearly a mod compatibility issue, the question then becomes which mod is making Pure Suffering crash. I know bugged releases of Optifine have caused my mod to crash with it in the past, are you perhaps using Optifine?

I don't use optifine. Oh, I'm using a mod that modifies the end, but it doesn't break anything, right?

Astrological was the cause! Once I deleted it, it worked fine. Also, I would like to ask, what is the Lost City Dimension?

Lost Cities is a dimension mod that adds a city world with abandoned buildings. As for Astrological compatibility, I plan to investigate this further to see if my mod or Astrological is at fault.