Hi, I have the same problem, I don't know if I can help you seeing OUR mods and tell what mods are common between us, I've the same problem when I electrify a goat it's ok, but the time I reach to hit it server crashes and "disconnected server" appears.
I tested out that if I have a raincoat and goat hits me, the game flows normally so, the game crashes only when my character (i'm the host in the server) gets hit by an electricity stuff... I hope we can figure it out, thank you.
PS. I upload my server log, same issue 'isexternallyinsulated' (a nil value)