I did some more tests and found that I can set the url parameter to anything I want, any value of schema, fqdn/ip, or port, but as soon as I put a hyphen anywhere in the value, ConfigFileValueError is thrown.
I did some more tests and found that I can set the url parameter to anything I want, any value of schema, fqdn/ip, or port, but as soon as I put a hyphen anywhere in the value, ConfigFileValue Error is thrown.