Fibaro RGBW Controller 2 Live Log error

I am using a Fibaro RGBW Controller 2 connected to a RGBW LED stripe. It works fine but not perfectly. I am able to turn on/off and change colours. The problem is that it takes quite a lot of time for the on/off “button” to change its state from one to another. Instead it shows either TURNING OFF or TURNING ON. In addition I am getting error msg on Live Log. I am using Device Handler made by @zcapr17. Any one knows what should be changed in code itself to get rid of error?

Link to Device Handler code:

I appreciate any useful tips!