Same issue.
$ sudo fprintd-enroll list_devices failed: No devices available
lshw:
*-usb:2 UNCLAIMED description: Generic USB device product: ELAN:Fingerprint vendor: ELAN physical id: 9 bus info: usb@1:9 version: 1.35 capabilities: usb-2.00 configuration: maxpower=100mA speed=12Mbit/s
Same issue.
$ sudo fprintd-enroll
list_devices failed: No devices available
lshw: