Cannot add Network Interface in Cockpit GUI - I get Ooops! Error

I have a new install of RHEL8 with two VMs.
I have had to delete one or two VMs to get things right.
Now if I try and add a Network Interface from the Cockpit GUI I get an Oops! error at the top of the browser (Firefox and Chrome)
Using Ctrl-Shift-J to see the error I have this:
Refused to apply inline style because it violates the following Content Security Policy directive: "default-src 'self' https://antares.fsoft.nnet:9090". Either the 'unsafe-inline' keyword, a hash ('sha256-BMIkowAqVEI88ibUJ1NtYB8ByZOuS4MTi73eGoFo2+Q='), or a nonce ('nonce-...') is required to enable inline execution. Note that hashes do not apply to event handlers, style attributes and javascript: navigations unless the 'unsafe-hashes' keyword is present. Note also that 'style-src' was not explicitly set, so 'default-src' is used as a fallback.
and more...
Why is this happening? I cannot find anyone else having this problem.