snap "pi" is not installed

[kelleraxel]

I try to connect the pi-fancontrol to the gpio.pin 14 as described in https://snapcraft.io/install/pi-fancontrol/opensuse

snap connect pi-fancontrol:gpio pi:bcm-gpio-14

error: snap "pi" is not installed

The gpio interface does not show any slot. Thus bcm-gpio-14 is missing.

snap interface gpio

name:    gpio
summary: allows access to specific GPIO pin
plugs:
  - pi-fancontrol
 - raspberry-pi-node-gpio 

How can "pi" be installed and the slots be configured? All other commands work fine except the one above.

• URL: https://snapcraft.io/install/pi-fancontrol/opensuse
• Operating system: openSuse Leap 15.5 on Raspberry Pi 4
• Browser:

[simmis]

It's the same on Ubuntu 23.10.