First things first: you should never use a dimmer switch, smart or dumb, to directly control the current to smart bulbs. Since these are two separate dimming devices they will confuse each other and you can burn out either the switch or the bulbs.
You can use a smart dimmer switch to control a smart bulb as long as the communication is all done just by radio, so that the switch does not actually control the current to the bulb. Instead, the switch will send an instruction to the hub which will then send an instruction to the bulb which will then modify the current for itself.
So you basically have two options. You can either replace the switch with one which does not attempt to control the actual current load to the bulbs or you can tie off your existing switch so that the bulbs always have current.
You should check your local code, but bot( these methods will meet code in most places in the US unless it is an attic light. You just have to be aware that if you do it this way, then if your home automation system is not working, the switch will not control the light. That’s why many people prefer the first option which leaves the original dumb switch in place for emergencies, but provides a different switch or a smart switch cover to control the bulbs when the home automation system is working.
See the following FAQ: ( The topic title is a clickable link)