Cannot install linux-firmware for Ubuntu-Mate 18.04.2 on Raspberry Pi 3B

Hi

Unable to install linux-firmware-raspi2/bionic-updates,bionic-updates 1.20190819-0ubuntu0.18.04.1 armhf [upgradable from: 1.20180919-0ubuntu0.18.04.2]
on Ubuntu-Mate 18.04.2 32 bit version on Raspberry Pi 3B.

Workaround can be found here:

https://bugs.launchpad.net/ubuntu-pi-flavour-maker/+bug/1839054/comments/1