I’m newbie and use Zigbee2mqtt for 2 days. When using it, I discovered that every time the curtain is closing or opening, Home Assistant system will issue a warning like the image below.
In the process of understanding, I learned that the mqtt command for the curtain only accepts the position in the form of numbers. But our system send the null value so it causes an error for the mqtt system. I tried to set retain = true, but it didn’t seem to be useful for this case.