The demo-oai-hss of EPC is always disconnected

[XXK777]

Hellow everyone !
There has some questions for me , The demo-oai-hss is disconnected when I run this command :demo-compose up -d oai_spgwu.the logs of demo-oai-hss see there:

pc@pc:~/openair-epc-fed/docker-compose/magma-mme-demo$ docker logs demo-oai-hss
/openair-hss/scripts /openair-hss
wait-for-it.sh: waiting 15 seconds for 192.168.68.130:9042
wait-for-it.sh: 192.168.68.130:9042 is available after 0 seconds
Traceback (most recent call last):
File "./data_provisioning_users", line 216, in
main()
...........................................................................
File "/usr/lib/python3/dist-packages/cassandra/cluster.py", line 1998, in execute
return self.execute_async(query, parameters, trace, custom_payload, timeout, execution_profile, paging_state).result()
File "/usr/lib/python3/dist-packages/cassandra/cluster.py", line 3781, in result
raise self._final_exception
cassandra.InvalidRequest: Error from server: code=2200 [Invalid query] message="Keyspace vhss does not exist"

Thank for your answer very much ! ：） ：） ：）

[Harsihv]

@XXK777 Have you solved this issue