Heimdall + Traefik: error fetching default icon while creating new site

[rubbo898]

Hello! Thanks for your great work, it's almost plug-n-play.

I'm facing a minor issue, while creating a new application in Heimdall (via FQDN, not local_ip:port) it gives me an error 404 related to the default icons. I've checked and everything is properly set, the error is due to an wrong call:

The omitted string is my $DOMAINNAME_CLOUD_SERVER.
Not a big deal, if I manually select the icon it works.

Did you faced the same behaviour?

EDIT:
my heimdall router-label is:

- "traefik.http.routers.heimdall-rtr.rule=Host(`$DOMAINNAME_CLOUD_SERVER`,`www.$DOMAINNAME_CLOUD_SERVER`,`heimdall.$DOMAINNAME_CLOUD_SERVER`)"

thank you