Issue with GIT when trying to use the push command?

Question

git

Good day! Error
when using command
git push -u origin master

Warning: Permanently added the RSA host key for IP address '192.30.252.128' to t
he list of known hosts.
fatal: remote error:
   is not a valid repository name
  Email [email protected] for help

With what it can be connected and with what it is possible to start to understand?
The actions were

git init
 git add -A
 git commit -m "header first"
 git remote add origin [email protected]:yourname/yourproject.git

Answer 1

@morflot dealt with the repository. Now about git push. Learn to read what it tells you.
It says that there are already commits in master that you don't have. Options: do git pull --rebase, or, if you don't need the changes that are already on the server, git push --force.

Answer 2

Have you checked everything?

Answer 3

If I understand correctly then: "Warning: Permanently added the RSA host key for IP address '192.30.252.128' to t
he list of known hosts."
SSH does not know this IP. You
tsarevfs threw a link, you should probably look where "Check your SSH access"