Installation trouble on PureOS Debian

Hello Bisq Community,
I have been wanting to use this application for some time but everytime I try and revisit it I run into the same problem. This is the output I receive:

Preparing to unpack Bisq-64bit-1.3.7.deb …
Removing shortcut
xdg-desktop-menu: No writable system menu directory found.
dpkg: warning: old bisq package pre-removal script subprocess returned error exit status 3
dpkg: trying script from the new package instead …
dpkg: … it looks like that went OK
Unpacking bisq (1.3.7) over (1.3.7) …
Setting up bisq (1.3.7) …
Adding shortcut to the menu
xdg-desktop-menu: No writable system menu directory found.
dpkg: error processing package bisq (–install):
installed bisq package post-installation script subprocess returned error exit status 3
Errors were encountered while processing:
bisq

If anybody can help me solve it that would be greatly appreciated. Many thank you’s in advance.

Bisq works best with the most known Linux distributions (Ubuntu and Mint). I found this about debian in the release notes maybe it helps:

Linux:
Hint for Debian users:
If you have problems starting Bisq on Debian use: /opt/Bisq/Bisq
If your Linux distro does not support .deb files please follow this instruction:
cd ~/Downloads
mkdir tmp
cd tmp
ar x …/Bisq-64bit-1.3.7.deb
sudo tar Jxvf data.tar.xz
sudo cp -rp opt/Bisq /opt/
That instruction is not tested on many different distros. If you encounter problems please report it in a Github issue so we can improve it.

Follow what @MnM suggested below. I think that may correct your problem.

Otherwise take a look at this, but i think they are related. Data directory fails to create.