Cannot get flight SQL to work

I am running the dremio/dremio-oss:22.0.0-image with the following dremio.conf.

services: {
  coordinator.enabled: true,
  coordinator.master.enabled: true,
  executor.enabled: true,
  flight.enabled: true,
  flight.use_session_service: false,
  flight.auth.mode: "legacy.arrow.flight.auth"
}

debug: {
  addDefaultUser: true
}

When I run the sample client I get the following error:
java -jar flight-sql-sample-client-application-4ecbafe.jar -host 127.0.0.1 -port 32010 -username dremio -password dremio123 -command GetSchemas

SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
Exception in thread "main" org.apache.arrow.flight.FlightRuntimeException: UNAUTHENTICATED: 
	at org.apache.arrow.flight.CallStatus.toRuntimeException(CallStatus.java:131)
	at org.apache.arrow.flight.grpc.StatusUtils.fromGrpcRuntimeException(StatusUtils.java:164)
	at org.apache.arrow.flight.grpc.StatusUtils.fromThrowable(StatusUtils.java:185)
	at org.apache.arrow.flight.auth2.ClientHandshakeWrapper.doClientHandshake(ClientHandshakeWrapper.java:59)
	at org.apache.arrow.flight.FlightClient.handshake(FlightClient.java:210)
	at com.adhoc.flight.client.AdhocFlightClient.authenticateUsernamePassword(AdhocFlightClient.java:257)
	at com.adhoc.flight.client.AdhocFlightClient.getClientHelper(AdhocFlightClient.java:207)
	at com.adhoc.flight.client.AdhocFlightClient.getBasicClient(AdhocFlightClient.java:162)
	at com.adhoc.flightsql.DremioFlightSqlClientDemoApp.executeApp(DremioFlightSqlClientDemoApp.java:143)
	at com.adhoc.flightsql.DremioFlightSqlClientDemoApp.main(DremioFlightSqlClientDemoApp.java:85)
	Suppressed: java.lang.NullPointerException
		at com.adhoc.flightsql.DremioFlightSqlClientDemoApp.close(DremioFlightSqlClientDemoApp.java:236)
		at com.adhoc.flightsql.DremioFlightSqlClientDemoApp.main(DremioFlightSqlClientDemoApp.java:83)

Is this a known problem?
Best regards,
Magnus Bakken