The latest update causes Minecraft 1.21.1 (Neoforge) to crash, giving error code 2. Rolling back to the previous version fixes the problem.

Yes log is here:

stdout.txt

Ah my bad, I believe the latest was mis labeled for 1.21.1 instead of 1.21.3

Sorry about this as the script is currently set to 1.21.1 and forgot when uploading yesterday to adjust the version to 1.21.2 for latest release but it has been corrected now