I downloaded the Upwork desktop App on ubuntu 18.04. When I open it with Gdebi package installer I saw this error:
I tried to install gksu manually via sudo apt install gksu but I got this error
Building dependency tree
Reading state information... Done
Package gksu is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
E: Package 'gksu' has no installation candidate
How can I install this software on ubuntu 18.04 (I download it yesturday so it is the most recent version on upwork website) ?