crash when 2 sink next to each other then r to rotate

you have not included the crash message, and i cannot reproduce it by rotating two sinks next to eachother, please provide more information.

Error while running event awesome-sink::on_player_rotated_entity (ID 21)
awesome-sink/control.lua:380: attempt to index a nil value
stack traceback:
awesome-sink/control.lua:380: in function <awesome-sink/control.lua:376>

thanks for providing a crash message rockingorc, could you by any chance also include a screenshot of how the awesome sinks were placed and then which you rotated?

sadly no.