Fails to launch from IntelliJ IDEA with old Minecraft and latest fabric-example-mod

[kaz-mighty]

When using an older Minecraft and the latest fabric-example-mod, Minecraft fails to start when running the Minecraft Client from IntelliJ IDEA.

Reproduction steps

1. Clone from fabric-example-mod and checkout 1.20.
2. Change each version of gradle.properties and build.gradle to Minecraft 1.19.4 as described in https://fabricmc.net/develop/ and wiki. (Java version also)
3. Although it is not on the wiki, we will also change the depends version of fabric.mod.json.
4. Run Minecraft Client from IntelliJ IDEA.
5. The attached error occurs.

error.txt

others

Strangely, it doesn't seem to occur when I run gradle runClient.
Also, it seems to no longer occur if you remove the loom block from build.gradle and the client entrypoint and mixin from fabric.mod.json.