BEFORE CONTINUING:

• Always check you are using the latest version of these mods and its dependencies
• Remove known problematic rendering mods such as Optifine, Sodium and others

Version-Loader

1.21.1-FABRIC

Moonlight Lib Version

moonlight-1.21-2.18.16

Describe the Issue

I tried adding the Moonlight Lib for the Supplementaries mod for my multiplayer server, I added the mod and the lib to the server and it loads just fine, but when I'm trying to load it on my client, it wont start up because of this exception.

Log Attachment

crash-2025-06-12_18.31.59-client.txt

OPTIONAL: To Produce

1. Download the Moonlight Lib and put it into the mods folder
2. Launch your minecraft

OPTIONAL: Which mods are affected?

• Supplementaries

I see, I'll try to delete the NBT editor mod, see if that will make it work. I really appreciate your fast response btw, thanks.

Something with nbt editor firing a reload before even vanilla registries have been created

Can confirm NBT Editor loads registries incorrectly in the latest version (see mega12345mega/NBT-Editor#145). I've since fixed this in the dev builds, so it will be fixed in the next release!
(Note this is the same as #329, except that issue also mentions something about FZMM later on, which I believe is an unrelated issue)