Sonarr gives "undefined" is not valid JSON error

[brianlic-msft]

Describe the bug:

When I try to add sensor.sonarr.upcoming.media as the entity, it gives me a "undefined" is not valid JSON.

Config YAML:

type: custom:upcoming-media-card
entity: sensor.sonarr_upcoming

Components:

It works fine with the Plex recently added component in the same dashboard.

HA Error:

"undefined" is not valid JSON

Troubleshooting Guide:

Home Assistant Version:

2023.4.1

Screenshots:

Additional Context:

[Phyxsius7]

I am experiencing the same issue
I have the following in my HA

1. installed "Upcoming Media Card" via HACS
2. followed the instruction from the following page, at that page step 4 was not possible
   https://github.com/custom-components/sensor.sonarr_upcoming_media/tree/master#manual-configuration-steps
3. added the following folders and files to homeassistant/www
   custom-lovelace/upcoming-media-card/upcoming-media-card.js
4. Add the following to settings > Dashboards > Resources (top left menu)
   url: /local/custom-lovelace/upcoming-media-card/upcoming-media-card.js?v=0.1.1
   resource type: javascript module
5. added card with the following YAML

title: TV
type: custom:upcoming-media-card
entity: sensor.sonarr_upcoming
image_style: fanart
collapse: flag=true
sort_by: number
enable_tooltips: true

at this point I get the error in the card
"undefined" is not valid JSON.

[mkanet]

You posted in the wrong repo. This repo hasn't been updated In years. Good thing I checked here.
You need to make sure you open your issue at the offical original repos. For example:
https://github.com/custom-components/sensor.sonarr_upcoming_media