[keycloak-user] Error with the nodejs example and KC 1.9.1

Hi, I'm trying the nodejs example provided here https://github.com/sebastienblanc/keycloak-nodejs-connect/tree/master/exa... and using Keycloak 1.9.1.Final. Once the nodejs app launched I am corectly redirected to the login page. But once I log in I can see a stacktrace in KC : https://gist.github.com/sebastienblanc/337597c8e570e5267c26f30b93c3c804 and the nodejs app hangs. Is it because of KC version, should I try with KC master ? Thx, Sebi