Error installation pi-bluetooth on Ubuntu Core

Hi, i’m trying to install the snap “pi-bluetooth” on a Raspberry Pi 4 with Ubuntu Core 20.04. I use the following command:

$ sudo snap install pi-bluetooth --edge

ad i get the following error:

error: cannot perform the following tasks:
- Start snap "pi-bluetooth" (17) services (systemctl command [start snap.pi-bluetooth.btuart.service] failed with exit status 1: Job for snap.pi-bluetooth.btuart.service failed because the control process exited with error code.
See "systemctl status snap.pi-bluetooth.btuart.service" and "journalctl -xe" for details.

How can i fix this issue?