[ovirt-users] Problem to create provider

We have a problem to create the first provider in the ovirt cluster by following next steps: Go to Administration - Provider - click Add Filled up fields for new provider with next information: Name: ovirt-provider-ovn Type: External Network Provider Network Plugin: oVirt Network Provider for OVN Provider URL: https://ovirthostname:9696 Uncheck Read-only Check Request authentication username : admin@internal Protocol HTTPS Hostname ovirthostname API port: 35357 Click Test Result: Test Failed (unknow error) Log file: 2021-03-23 15:23:50,986-04 ERROR [org.ovirt.engine.core.bll.provider.network.openstack.ExternalNetworkProviderProxy] (default task-118) [501852ef-cd76-40d0-8ef3-6b0826b3c0dd] Failed to communicate with external provider 'ovirt-provider-ovn' due to error 'ConnectException: Connection refused (Connection refused)' [org.ovirt.engine.core.utils.servlet.ServletUtils] (default t2021-03-23 15:23:50,986-04 ERROR [org.ovirt.engine.core.bll.GetProviderCertificateChainQuery] (default task-118) [501852ef-cd76-40d0-8ef3-6b0826b3c0dd] Error in encoding certificate: EngineException: Connection refused (Connection refused) (Failed with error PROVIDER_FAILURE and code 5050) I think I would expect to ask the certificate to complete connection but does not ask for certificate at all. Any idea how to solve this?