My frontend reports I have an extra key [flash] that will be a breaking change soon. Only thing is, I search for it, and the only place I can find a reference to it is in the @OttoWinter ESPHOME addon, which, if I may say, is just about the greatest thing since sliced bread.
Is it just my bad config, or will this be solved somehow by itself (someone else way smarter than me : )
2019-03-21 19:59:12 WARNING (MainThread) [homeassistant.helpers.config_validation] Your configuration contains extra keys that the platform does not support.
Please remove [flash].
Searching all my config files only brought it up as a comment (# before it)
And the geniouses strike again! You were absolutely right. I went into terminal and found the mosquitto.db, stopped mosquitto and deleted the file. restarted Home Assistant and - Gone! Thank you so much all who cares to help!