Template that should return a string is returning as '[object Object]': null

[WERUreo]

I made a RESTful sensor that gets the url for NASA's Astronomy Picture of the Day and was hoping to use a template to use that sensor's state as the image. I set up my card like this:

type: custom:card-templater
card:
  type: picture
  image_template: {{ states.sensor.nasa_apod.state }}
entities:
  - sensor.nasa_apod

After I save it and go back to edit the card, my template has been replaced with '[object Object]': null. I've tested the template and it returns the correct string.

[gadgetchnnel]

You need to eiother wrap the template in quotes, like:

type: custom:card-templater
card:
  type: picture
  image_template: '{{ states.sensor.nasa_apod.state }}'
entities:
  - sensor.nasa_apod

or use one of the YAML multi-line operators (aka "block scalar headers") like >- like this:

type: custom:card-templater
card:
  type: picture
  image_template: >-
    {{ states.sensor.nasa_apod.state }}
entities:
  - sensor.nasa_apod

[WERUreo]

oh man, rookie mistake. thanks for the insight!