After importing the self-generated certificate, when connecting to the Idraw (an Axidraw-compatible device) I get: the error in $subject:
Web USB not working: Failed to execute 'open' on 'USBDevice': Access denied.
see the attached image:
I am fairly sure nothing else is using the device. This happens running the server on windows (yes, I know). In the readme, you mention that permissions need to be set - could you provide some guidance about how?