KC868-M16v2 configure yaml for ESPhome

[sanketgroup]

I tried this on 3 different machines running latest Home Assistant.

1st Machine: ESPHome 2025.6 running on Home Assistant_1
Result: No issue with M16v2

2nd Machine: ESPHome 2025.7.2 running on Home Assistant_2
Result: Problem, throws an error as shown before

3rd Machine: ESPHome 2025.6 and 2025.7.2 running on Home Assistant_3
Result: No issue with M16v2

Also, the same configuration was working well for many weeks, but suddenly, after upgrading Home Assistant and ESPHome to 2025.7, it stopped working.
(I did not make any changes or upload a new yaml to your device)

Are you running ESPHome on a separate standalone rather than within the Home Assistant add-on?
Because after trying on 3 different machines with different versions, I am sure there is some issue withthe Home Assistant Add-on ESPHome 2025.7