Server crash starting spark background profiler

[NonSwag]

Stack trace

https://pastebin.com/SUqs8Bnr

Plugin and Datapack List

pl
[18:52:24 INFO]: ℹ Server Plugins (2):
[18:52:24 INFO]: Paper Plugins:
[18:52:24 INFO]: - ServiceIO, Worlds
datapack list
[18:52:38 INFO]: There are 3 data pack(s) enabled: [vanilla (built-in)], [paper (built-in)], [file/bukkit (world)]
[18:52:38 INFO]: There are no more data packs available

Actions to reproduce (if known)

Start paper 26.1.2 using java 26

Paper version

This server is running Paper version 26.1.2-60-main@b4682bf (2026-05-04T06:25:04Z) (Implementing API version 26.1.2.build.60-stable)
You are running the latest version
Previous version: 26.1.2-53-39a1aa5 (MC: 26.1.2)

Other

No response

[electronicboy]

This is down to the async profiler not supporting Java 26

[NonSwag]

Interesting. Now I am wondering why it worked for the entire time since 26.1 was released, until today.

[davidmayr]

Isn't 26.1 a Java 25 based version? Maybe you accidentally switched JVMs? (Considering /home/david/Coding/example is in the crash log I would assume this is run in the IDE and it this might be your IDE just forgetting what it was last set to?)

[YnsanitY16]

he is using java 26 for his test server it's probably something that was intended.

[NonSwag]

Yes that was somewhat intended but it still got me off guard since it worked on java 26 since the release of mc 26.1
My java command points to the latest version by default and since I didn't encounter any issues with it before, I just didn't bother to start using java 25