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Missing firmware for device
A device on my computer does not work with PureOS. Logs say something about missing firmware.
PureOS is designed to support only devices which do not require non-free/proprietary binary drivers or firmware, meaning it does not have such drivers/firmware. Check if your computer have such devices (AMD or nVidia graphics, Intel or newer Broadcom wireless lan cards, etc).
Librem laptops are free of such devices, with only exception currently bluetooth stack—for a Librem's bluetooth to work you need proprietary firmware that comes along with ath3k driver: https://wireless.wiki.kernel.org/en/users/drivers/ath3k.
Debian GNU/Linux has the required firmware in their non-free repo: https://packages.debian.org/buster/firmware-atheros.
Check if the firmware-linux-free package is installed, install it if not. If the device requires non-free/proprietary binary drivers/firmware, it won't work in PureOS.