I can't start any Forge modpack for 1.20.1. It crashes with exit code 1 before even getting to the title screen.
I've even tried creating a blank 1.20.1 curseforge profile with Forge 47.3.0 and no mods, but that crashes as well. Here's the log file from that: https://pastebin.com/Gtk3E0gC
Here's a list of things I tried before posting here:
fresh reinstall of Minecraft
updating my Intel drivers
updating my NVIDIA drivers
reinstalling java runtime environment from java.com
installing the JDK 21 from oracle.com
installing the JDK from adoptium.net
Nothing changed.
BUT: This ONLY happens for 1.20.1. all of my modpacks for 1.19. All of my modpacks for 1.19 and below start just fine.