Made such a sequance of commands:
eval `ssh-agent -s`
Agent pid 1287
ssh-add D:\\Programming\\Python\\python_folder_key
git remote -v
origin git@github.com:devmafia/Python_Django_Udemy.git (fetch)
origin git@github.com:devmafia/Python_Django_Udemy.git (push)
git push origin master
git@github.com: Permission denied (publickey).
fatal: Could not read from remote repository.
Please make sure you have the correct access rights
and the repository exists.
Don't really understand what's wrong in my sequence: