File Integration, sensor from json

Configuration
1

I see great potential with the file integration in Home Assistant, but I can’t get it to work. I’ve tried numerous combinations and eventually went back to trying to make it work by entering the information directly from the page describing the integration: File - Home Assistant. But even that doesn’t work; I can’t figure out what I’m doing wrong. I get a warning in the log: “File or data not present at the moment: sensor.json”
It must have something to do with the path?

Here’s how my settings look now:
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And in the File Integration UI:
image

The JSON file config/sensor.json:
image

Any ideas?

2

is the json file in “config” or “homeassistant” ?

3

The file is located in the folder “/config”. If you look at the screenshot above, this is how it appears when I use the built-in File Editor in Home Assistant. Regardless of whether I list the contents of “homeassistant” or “config” in the Terminal, the same files are displayed.
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