src/main/java/org/keycloak/protocol/cas/endpoints/LogoutEndpoint.java

@@ -70,7 +70,7 @@
            return;
        }

        client = realm.getClients().stream()
        client = realm.getClientsStream()
                .filter(c -> CASLoginProtocol.LOGIN_PROTOCOL.equals(c.getProtocol()))
                .filter(c -> RedirectUtils.verifyRedirectUri(session, service, c) != null)
                .findFirst().orElse(null);