i followed this tutorial to install Bitcoind
and this one
I have an error in this cmd
To get this work, you need bitcoin-cli installed on your system.
Otherwise, you can always create one conf.ini file in cert-issuer directory with following lines included,
issuing_address = <your bitcoin address>
usb_name = </Volumes/path-to-usb/>
key_file = <file-you-saved-pk-to>