A friend and i have been playing for hours when this showed up. We have all the same mods, including valheim plus and the game and mods are all updated. When i try to join the game says incompatible version but the game and all mods are updated. In the screen in the background this error shows up. could this be part of it? are there any fixes?

[Error : Unity Log] MissingMethodException: string Utils.GetSaveDataPath()
Stack trace:
UnityEngine.GameObject:AddComponent(Type)
BepInEx.Bootstrap.Chainloader:Start()
UnityEngine.Application:.cctor()