Disable TLS for spice connections?

I have a question that is nearby.

I use Remmina (Spice) as viewer, but I cannot establish a connection at the Moment. My research says, that it could be a TLS Problem. I have tried to understand how to interact with this, but it doesn't work. So I want to disable TLS. I don't need it at the moment.
 
I have a question that is nearby.

I use Remmina (Spice) as viewer, but I cannot establish a connection at the Moment. My research says, that it could be a TLS Problem. I have tried to understand how to interact with this, but it doesn't work. So I want to disable TLS. I don't need it at the moment.
Did you ever managed to solve this ? I also was just attempting to setup Remmina to use SPICE over SSH Tunnel but it just doesn't work (Connection to the SPICE Server dropped) :(