[Bug]: WebAuthn broken

[bramblebird-ux]

⚠️ This issue respects the following points: ⚠️

• This is a bug, not a question or a configuration/webserver/proxy issue.
• This issue is not already reported on Github OR Nextcloud Community Forum (I've searched it).
• Nextcloud Server is up to date. See Maintenance and Release Schedule for supported versions.
• I agree to follow Nextcloud's Code of Conduct.

Bug description

After a recent update a few days ago, I can no longer use WebAuthn/Fido to login to my Nextcloud instance.
I tried multiple users on both firefox and chromium.
The Authenticator does not show any light as it normally would.
Authentication to other servies works just fine with the same token

Server version 30.0.6.2

Steps to reproduce

1. Select login with a device
2. Enter username
3. Hit enter

Expected behavior

The browser should ask for user presence to the authenticator, while the token shows a blinking led.

Nextcloud Server version

30

Operating system

Debian/Ubuntu

PHP engine version

None

Web server

None

Database engine version

None

Is this bug present after an update or on a fresh install?

Updated from a MINOR version (ex. 32.0.1 to 32.0.2)

Are you using the Nextcloud Server Encryption module?

Encryption is Disabled

What user-backends are you using?

• Default user-backend (database)
• LDAP/ Active Directory
• SSO - SAML
• Other

Configuration report

List of activated Apps

Nextcloud Signing status

Nextcloud Logs

Additional info

No response

[susnux]

Might be a duplicate of #51137 - we should check this.

[bramblebird-ux]

After trying to register the WebAuthn device again, I indeed got the same error message as reported in #51137

This most likely is a duplicate bug

[susnux]

#51137

[swissbit-eis-admin]

consider: working here :#57140