Migrated u2f entry does not work for authentication

[jgomer2001]

Gluu CE 4.4.1 on Ubuntu 20.

I migrated a U2F entry to FIDO2, here is the ldif (this user has uid=admin, do not import without preliminar edition):
admin.ldif.txt

Migration process explained here. Ensure to use master branch for step 1 (i.e. https://github.com/GluuFederation/casa/archive/master.zip)

The following appears in the jetty log when trying to authenticate:
assertion.txt

The fido2.log file does not show any error at all. Why?

Here's a screenshot from the browser:

The NPE is thrown because getRegistrationData().getAttenstationRequest() evaluates to null in the migrated entry