error: src refspec main does not match any. error: failed to push some refs to 'origin' code example

Example 1: src refspec master does not match any

#THis is not my solution but one this have worked for me in different situation so i copied all of them
git init
git add . //to add everything
git commit -m ''
git remote -v
git push heroku master

//New
git config --global user.email "[email protected]"

git config --global user.name "Your Name"
# You are trying to add an empty repository, add something first, like a readme
touch README.md
git add README.md
git commit -m "Initial commit"
git push --set-upstream origin master

Example 2: error: src refspec master does not match any error: failed to push some refs to android studio

git commit -m "initial commit"
git push origin master

Example 3: error: src refspec main does not match any error: failed to push some refs to 'https://github.com/majeduli/paul-template.git'

error: src refspec master does not match any.  
error: failed to push some refs to 'ssh://xxxxx.com/project.git'