New but old topic: yunomdns stopped

What type of hardware are you using: PC with Intel CPU
What YunoHost version are you running: 12.1.39
How are you able to access your server: SSH

Describe your issue

This topic: Yunomdns service stopped!
has the solution and it works but I do not understand why it hqappened again in ver.12.1.39

Share relevant logs or error messages

Diagnosis suddenly showed the service had stopped after last update…