18.04 – Bose Soundlink does not appear in the list of Bluetooth devices

Using Ubuntu 18.04.2 LTS in a Lenovo Flex 14. The speaker of my bluetooth is shown as "Unknown not configured" in the Bluetooth list. I know that bluetooth is working because I can connect my Android phone without problems.

I made sure pulseaudio-module-bluetooth was installed and updated, but

module of charge of $ pactl module-bluetooth-discover
Fail: Module initialization failed