I have FastWorkbench 3.0.0 installed on both the server and the client.
But when i connect to the server I get:

Missing registry data for network connection:
	minecraft:menu: fastbench:fastbench
Failed to load registry, closing connection.
Connection closed, not continuing handshake

The problems occure when connecting to a server using this ModPack:
https://github.com/puggan/SundragonMods/releases/tag/v0.0.2

If i manualy install the same mods, I don't get the error.

Any clue to why 2 different ways of installing a mod, the same mods, the same version, gets different results?

Required: false
do wiered stuff, twitch shows it as enabled, minecraft list it in the "mods" meny, but the file is named jar.disabled, and isn't loaded correctly.

https://github.com/puggan/SundragonMods/blob/9799e65acf5b71520a3ffcd3a9eaf64fd4a5f403/manifest.json#L36