"No-eduGAIN-Metadata" on login interface for adAS SSO IdPs

Summary

for many of the identity providers using a specific IdP software very popular in Spain (adAS SSO), I also see this error, but it’s probably related on how the login form is constructed, rather than been a “No-eduGAIN-Metadata” problem. This can be seen for instance in this other IdP: https://sp-demo.idem.garr.it/Shibboleth.sso/Login?entityID=https://www.rediris.es/sir/usalidp

Steps to reproduce

Check the entity https://www.rediris.es/sir/usalidp on ECCS.

What is the current bug behavior?

"No-eduGAIN-Metadata" ECCS result.

What is the expected correct behavior?

"OK" ECCS result.

Relevant logs and/or screenshots

No

Possible fixes

Check the form.