--restful-URI
The URI (address) of the RESTful service. The default is tcp://localhost:8081. Valid schemes are tcp, none, or unix. In the case of unix, the "host" portion would be a path to where the unix domain socket will be stored. A scheme of none disables the RESTful service.
https://github.com/crc-org/vfkit/blob/main/doc/usage.md#generic-options
Needs to be "--restful-uri" (lower case)
Error: unknown flag: --restful-URI