Add-on: Mosquitto - username with no password

Hi there,

its there a way to configure the add-on with a username but no password?

I tried NULL, ‘’, and everything else I could think of in the config

logins:
  - username: username
    password: 

But just like leaving the field empty, NULL throws an error when I’m trying to save the config while '' or "" lets me save the config but when I try to connect without a password (I’m using MQTT Explorer) I get a ‘Connection refused: Not authorized’ error

Is there really nobody who has an idea how to achieve this?