Some program using the git -c core.quotepath=false config --global user.name amirzayev tries to configure git. Probably, there is no configuration file at Z://.gitconfig . This is very logical - why should your configuration be on a shared disk?
The user.name and user.email are required to sign commits with your name and email. Without them, you cannot create a commit, that is, you will not be able to fully work with Git.
Set up Git yourself, there is a chance that then a stupid program will not do it for you. Just substitute your real email address:
git config --global user.name Arzu Mirzayev git config --global user.email "amirzayev@mycompany.tld"