Hello
I recently updated CAS from 6.6.4 to 6.6.6 and found that it is not possible to log in with OAuth.
This problem also exists in version 6.6.7.
The error that occurs when entering is as follows:
ERROR [org.apereo.cas.util.serialization.AbstractJacksonBackedStringSerializer] - <Cannot read/parse [{"@class":"org.apereo.cas.ticket.code.OAuth20DefaultCode","@id":1,"expirationPolicy":{"@class":"org.apereo.cas.ticket.code...] to deserialize into type [class org.apereo.cas.ticket.code.OAuth20DefaultCode]. This may be caused in the absence of a configuration/support module that knows how to interpret the fragment, specially if the fragment describes a CAS registered service definition. Internal parsing error is [Cannot construct instance of `org.apereo.cas.validation.ImmutableAssertion` (no Creators, like default constructor, exist): cannot deserialize from Object value (no delegate- or property-based Creator)
I think this problem is related to these changes: