Read the statement by Michael Teeuw here.
Why Is MMM-Yeelight is not working
it says MMM-Yeelight node helper received a socket notification: CLOCK_SECOND - Payload: [object Object] No Data Returned
@Osker that is not an error.
It just says that it received a socket notification and does not do anything with it.
There must be something else that is not working.
EDIT: Looking at the source code, it seems that the module sends EVERY notification received to its node_helper for processing it. That’s not a good behaviour from my point of view. It’s 2 years old, so possible it does not work anymore as expected.
You should open an issue on github.
Hmm Okay Thanks