Litematica version:0.21.0 and 0.21.1
MaLiLib version: 0.23.1

Litematica Crashes on all multiplayer server , singleplayer works fine

Logs are attached

2025-02-27-4.log

edit:I talked with feather and they told me to make a ticket here

The server you are connecting to sends you into a "Fake Dimension" for a proxy server.

levels=[ResourceKey[minecraft:dimension / minecraft:goxy_hub]]

minecraft:goxy_hub is not a valid dimension type.

java.lang.IllegalStateException: Missing element ResourceKey[minecraft:dimension_type / minecraft:the_nether]

Litematica generally needs access to the Dynamic Registry located on the server so that it can validate the dimension ID.

Anyway for the server owner to make it work or maybe a bypass?

It's an issue with whatever proxy software that their "Hub" is using. It needs to properly manage the Configuration Phase of the connection.