This Mod is a dirty fix for the original Version from mally.hubz
https://mods.factorio.com/mod/Multi_Circuit_Repeater
Last Version with this error was 1.0.17
i've removed the "get_wire_connectors" error in Control.Lua in Line 110
in addition to the removal, you need to place your wires manually now.
i hope mally.hubz is replacing this version with a better one later