title: GITHUB Push failed: Failed with error: fatal: unable to access
body: <p>Before, i user A account to push code on Android Studio.Now i logout and change into B account to Push.
  When pushing error occur:</p>
  
  <pre><code>Push failed: Failed with error: fatal: unable to access 'https://github.com/thangcoder/demo.git/': The requested URL returned error: 403
  </code></pre>
  
  <p>And below error when i push in command:</p>
  
  <pre><code>$ git push -u origin master
  remote: Permission to thangcoder/demo.git denied to trangchongcheng.
  fatal: unable to access 'https://github.com/thangcoder/demo.git/': The requested URL returned error: 403
  </code></pre>
  
  <p>(trangchongcheng is A Account)</p>
  
  <p>Please for me sugest, thank all.</p>