found the solution on https://ubuntuforums.org/archive/index.php/t-2323285.html
"Apparently the driver expected libgs.so to be in /usr/lib while it was actually residing in /usr/lib/x86_64-linux-gnu So
sudo ln -s /usr/lib/x86_64-linux-gnu/libgs.so.9 /usr/lib/libgs.so did the trick."
found the solution on https:/ /ubuntuforums. org/archive/ index.php/ t-2323285. html
"Apparently the driver expected libgs.so to be in /usr/lib while it was actually residing in /usr/lib/ x86_64- linux-gnu
So
sudo ln -s /usr/lib/ x86_64- linux-gnu/ libgs.so. 9 /usr/lib/libgs.so
did the trick."