Blueprint automation trigger showing as triggered but no traces and nothing works

[worldly abyss]

When I press a button of my switch the automation does not get executed and the last execution date does not update.
but a new trace is being created but it is empty

When I press "take over control" in the bluprint automation it shows that I pressed a button

But again, the trace is empty and does not show that the button was pressed

I had a previously working automation (yaml below) but it is a lot larger, therefore I wanted to try to make it more simple

[rocky notch]

What if you do Trace => 3-dots = Download trace. Is that file empty as well?

[candid olive]

It may have triggered multiple times. Without changes HA defaults to storing 5 last traces of an automation. Check if there is a prior using the arrow on the top of the trace screen.

[worldly abyss]

@rocky notch @candid olive I got it working after trying for another 8 hours or so. The issue was withing the variables block, it seems some template expression couldn't execute properly. But HA does not show any error in this case and it is pretty much impossible to debug due to no feedback

[candid olive]

yup

[rocky notch]

Then I think you should have an error in your log of HA Core. But yeah, weird the trace shows nothing. Is the trace download actually empty as well?

[worldly abyss]

Actually, the downloaded trace contains an error "error": "SecurityError: access to attribute 'update' of 'dict' object is unsafe." weird that this isn't shown in the UI. I had a quick look but didn't see the error field but now looking at it again I saw this field

[noble ridge]

As the error states you can't use update in jinja

you can use the recently added combine function though

https://www.home-assistant.io/docs/configuration/templating/#combining-dictionaries

But there are more issues with your templates

you'll need to use namespaces to use the changes done in your for-loop outside of the for-loop