Fout: argument of type 'int' is not iterable when parsing

The problem

"{{trigger.slots.artist }}" is parsed as a int in my music integration. I use music assistant. but they say its a hass bug.

I get this executed code in the tracing.

Fout: argument of type 'int' is not iterable
Resultaat:

params:
  domain: mass
  service: play_media
  service_data:
    media_type: artist
    enqueue: play
    media_id: "queens of the stone age"
    entity_id:
      - media_player.snapcast
  target:
    entity_id:
      - media_player.snapcast
running_script: false

with this service call

service: mass.play_media
metadata: {}
data:
  media_type: artist
  enqueue: play
  media_id: "{{trigger.slots.artist }}"
target:
  entity_id: media_player.snapcast

this works.

service: input_text.set_value
metadata: {}
data:
  value: "{{trigger.slots.artist }}"
target:
  entity_id: input_text.mpd_playlist

service: mass.play_media
metadata: {}
data:
  media_type: artist
  enqueue: play
  media_id: "{{ states('input_text.mpd_playlist') }}"
target:
  entity_id: media_player.snapcast

strange thing was that i just became to appear. when i wanted to go to bed. It 1st cached the wrong name playing some thing else then this happened.

What version of Home Assistant Core has the issue?

core-2024.5.3

What was the last working version of Home Assistant Core?

core-2024.5.2

What type of installation are you running?

Home Assistant OS

Integration causing the issue

conversation

Link to integration documentation on our website

https://www.home-assistant.io/integrations/conversation/

Diagnostics information

No response

Example YAML snippet

No response

Anything in the logs that might be useful for us?

No response

Additional information

No response

Hey there @home-assistant/core, @synesthesiam, mind taking a look at this issue as it has been labeled with an integration (conversation) you are listed as a code owner for? Thanks!

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home-assistant / core