HTTP error 404 in get_hypervisor_uuid

[ge0rgi]

I am having trouble using the Asset Tag Filter with OpenCIT 2.2. Inside the method get_hypervisor_uuid() I receive a HTTP error 404. The request URL which causes the exception is '/mtwilson/v2?nameEqualTo=compute1' I have a registered host named compute1 visible in the dashboard. Here are the relevant parts of mtwilson.env

MTWILSON_SERVER=opencit
MTWILSON_API_BASEURL="https://${MTWILSON_SERVER}:8443/mtwilson/v1"
MTWILSON_TAG_ADMIN_USERNAME=tagadmin
MTWILSON_TAG_ADMIN_PASSWORD=password

and the trusted_computing section of the nova configuration:

[trusted_computing]
attestation_server = opencit
attestation_port = 8443
attestation_server_ca_file =
attestation_host_url = /mtwilson/v2
attestation_auth_blob = tagadmin:password
auth_timeout = 60

Using the host IP also causes a HTTP error 404
Am I using a wrong base URL or something else?