Fix compatibility issue

virtweb_backend/src/actors/libvirt_actor.rs

@@ -31,7 +31,7 @@ impl LibVirtActor {
             "Will connect to hypvervisor at address '{}'",
             hypervisor_uri
         );
-        let conn = Connect::open(hypervisor_uri)?;
+        let conn = Connect::open(Some(hypervisor_uri))?;
 
         Ok(Self { m: conn })
     }