Could not read from remote repository

Make sure you are using the correct SSH keys/usernames on both your GitHub account and your local machine. Here's how you can do that on GitHub

Also, you might consider using an alternative Git manager. I've never heard of Aptana, but I do know that GitHub has an awesome GUI program for managing your repositories.

In the future, this is all much easier and more streamlined on Linux/Unix operating systems like Ubuntu. Ubuntu is geared towards developers and has things like Git and SSH installed correctly by default.

I had the exact same issue with a private repo. Cloning through the same error both through https and ssh

Then I made a commit through github (simply updated the README.md with an empty line)

Surprisingly enough, this resolved the issue. It would be nice to know why though!

I had the same problem - it was caused by me using the SSH key instead of the HTTPS URL. I created my repository by importing a project via Intellij and it must have pushed via HTTPS.

Assuming you have done the proper SSH keys configuration according to github's instructions it might be a problem of pull with https and later pushing with git+ssh

to make it more clear

if you have used https to pull

git pull https://github.com/user/repo.git

then you have changed remote URL

git remote set-url origin git+ssh://github.com/user/repo.git

and tried to push after some changes and commits

git push origin master

you might get this error it happened to me

erase the local repository and re-clone using git+ssh

git pull git+ssh://github.com/user/repo.git

and now your push should work

ssh-add -A resolved my issue in MacOS Sierra 10.12.6.

I had no problem both for public and private repo before.

Today I tried to clone or git pull for private repo, but it hit the above issues.

After search around, this is the perfect solution for me.