I just upgraded from Keycloak 2.3.0 to Keycloak 3.2.1. I used export and import as described here in the documentation: https://keycloak.gitbooks.io/documentation/server_admin/topics/export-import.html
Everything seems to work fine from the user point of view, but every time a user visits the keycloak login page, an error is logged in keycloak log:
ERROR [org.keycloak.keys.FailsafeHmacKeyProvider] (default task-10) No active keys found, using failsafe provider, please login to admin console to add keys. Clustering is not supported.
In 2.3.0 this error was not present. What is causing this error, and how can I resolve this?