Is it supposed to actually work as a Roboport or only be cosmetic? cause it does not work and if I equip it with anything it crashes.

got

For me it not crashes directly when I equip something, seem append when a robot try to leave.

Error whule running event miku;on_tick (ID 0)
Invalid ItemID: expected LuaItemPrototype, LuaItemStack, LuaItem or string.
stack traceback:
[C]: in function 'insert'
miku/control.lua:73: in function 'upgrade_miku'
miku/control.lua:173: in function <miku/control.lua:166>