@ivan_531 - sorry for the delay on this. I missed the notification with your response.
Can you share your unescaped XML? If you do not want to share it here, feel free to DM me or email it to me at jmisleh@omnissa.com.
I have seen this happen when you configure User Authentication, but there is no User certificate on the device that matches if you are using Cert Auth.
If you want to share the XML file, I can take a look at it, as well as try writing a custom XML profile for you.
Additionally, you can engage support if you need immediate assistance with this.