Multiple iframe error

Can anyone explain why this is not working? If i only use Portainer it works, soon as i add a second iframe (AdGuard) i got errors.

    title: Portainer
    icon: mdi:docker
    title: AdGuard
    icon: mdi:shield-check

Fixed. For some reason name AdGuard is not accepted, adguard works fine.

Hadn’t seen any other updates to this so thought I’d share. The Panel Name (panel_name) need to be in lower case. I had a similar problem and figured this out. Must be a YAML thing related to keys but didn’t see anything on the HA page for iframes.