Scala - Duplicate name in manifest when running any code

[Aresiel]

When I run for example

@main def hello() = println("Hello, Scala developer!")

with the "I Run Code" Discord bot, I recieve the following output:

Nov 23, 2023 8:21:44 PM java.util.jar.Attributes read
WARNING: Duplicate name in Manifest: Main-Class.
Ensure that the manifest does not have duplicate entries, and
that blank lines separate individual sections in both your
manifest and in the META-INF/MANIFEST.MF entry in the jar file.
Hello, Scala developer!

as well as the information that "I received scala(3.2.2) compile errors".

This error occurs regardless of what Scala code I have attempted to run, regardless of whether that code has worked locally.