Server error response 500

Hi everyone, I have an instance of HA running that I have been using for quite awhile. I finally decided to learn about/try to use blueprints. I am just trying to create an instance of one of the default blueprints just to play around. No matter what I do in there though, I keep getting Response 500 error back from the server.

When I look at the logs it is giving me…

File “/usr/src/homeassistant/homeassistant/util/yaml/loader.py”, line 306, in secret_yaml
raise HomeAssistantError(“Secrets not supported in this YAML file”)

Any idea what is going on there? Do I need to configure something to enable the blueprint functionality?

I am running supervised version od DebianHA:

core-2021.6.6
supervisor-2021.06.3
Debian GNU/Linux 10 (buster)
Docker 20.10.2

It is running in an Intel NUC.

Thanks!

Did you ever figure this out? I am trying blueprints now and ran into same issue. Down to the exact line 306.

Are you using secrets in your blueprint?
Or in a derived automation?

I have only 2 blueprints, and they are the default ones. I’ve actually never used them up until now. I deleted all 3rd party ones.

I have also run a config checker, and throws no errors or signs of config issue. Kind of bizarre.