Other

I'm using Fabric version 0.16.10 for Minecraft 1.21 and have downloaded version 1.2.8 of your mod from CurseForge. According to this issue, Fabric users were previously able to connect to the server without having the mod installed locally, though they would be missing the UI. However, when I tried connecting to my server without the mod installed on my client, I received a message about a mismatch in the mod list.

Has this functionality been removed, or is this a bug?

[11:03:30] [Render thread/ERROR]: Registry remapping failed!
java.util.concurrent.CompletionException: net.fabricmc.fabric.impl.registry.sync.RemapException: Received a registry entry that is unknown to this client.
This is usually caused by a mismatched mod set between the client and server. See the client logs for more details.
The following registry entry namespaces may be related:
spawnermod