Broadlink rm config-sample.json
It has creeped in an extra comma in the config-sample.json and thus throws out an error

It is the comma just after the graph closed parenthesis after the sat/sun end 22 hour in the advanced ac conditioner, line 141 according to JSONLint.com parser , followed by a square closed bracket.

No idea if the error is replicated too in the multi config json

Thanks