After completing all the steps regarding installation of ferret. when I launch the same in the WSL window getting the following error
ferret: error while loading shared libraries: libcurl.so.4: cannot open shared object file: No such file or directory
I know generally what this means but I don't know what the "proper" solution is to you.
Probably the easiest potential solution is to install libcurl version 4 using the official package manager of your Linux system. Even if it fails, it is at least harmless.
Ryo