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Make sure that the EXACT same mods installed on both your PC and the server. It is not enough to simply have the same mods installed, they must also be installed in the exact same version. Likewise, the version of the mod loader (Fabric/Forge) must be identical.
The problem is related to the mod moreswords
Please specifically check this mod again if you have the exact same version installed on the server and on your computer.
If so, try to delete the config folder on server and client.
