Error when leaving server

[end-user]

trafficstars

I get this error when I close a connection [08:24:59] [Render thread/INFO]: [STDERR]: java.io.IOException: Invalid file path [08:24:59] [Render thread/INFO]: [STDERR]: at java.base/java.io.File.createNewFile(File.java:1041) [08:24:59] [Render thread/INFO]: [STDERR]: at kaptainwutax.seedcrackerX.config.StructureSave.saveStructures(StructureSave.java:30) [08:24:59] [Render thread/INFO]: [STDERR]: at net.minecraft.class_638.handler$bid000$disconnect(class_638.java:3123) [08:24:59] [Render thread/INFO]: [STDERR]: at net.minecraft.class_638.method_8525(class_638.java) ...

Am I missing a config setting or have something set wrong?

[19MisterX98]

Are you using a custom file path for your minecraft instance or a custom launcher?

[end-user]

Yes - using MultiMC

[19MisterX98]

Multimc is fine, maybe your worldname contains invalid characters for a file path. the world name is in this case the server domain. Im not sure if those even support chars that arent supported by filepaths

[end-user]

Correct, I see that there are files with world names with .txt when they're single-player, and servernames with an underscore and IP (but no extension). Almost all these files are empty though.

[19MisterX98]

Did this happen once, only for one server, randomly or all the time?

[end-user]

Yes, it appears to happen for all servers, everytime, but not in single player.