Error while trying to push

Hi Warda!

Thanks for reaching out!
This error message suggests there’s a connectivity issue between your machine and GitHub’s server. Sometimes, GitHub's servers may experience downtime. You can wait a bit an try to connect later.
If that doesn't solve the issue, make sure you have a stable internet connection or try connecting to a different network. 
Additionally, ensure that Git is allowed through your firewall. Some firewalls or antivirus programs may block such connections.
Hope this helps.
Best,
Ivan