Error java.lang.NullPointerException: Cannot invoke method toInteger() on null object @ line 689

Devices & Integrations Connected Things
14

Hi there,

Help me, please.
I Connect Hue Bulb (Single bulb ampoule unique) with ST (Not through Hue Bridge). They connected together.
When i control Hue Bulb by ST App, i receive that “java.lang.NullPointerException: Cannot invoke method on() on null object @ line 81”. Hue bulb cannot turn on/off.

Thanks