title: Heroku buildpack for Dart: Pushing app to Heroku
body: <p>I am using this "Heroku buildpack for Dart" from the following Github repository: <a href="https://github.com/igrigorik/heroku-buildpack-dartam" rel="nofollow noreferrer">https://github.com/igrigorik/heroku-buildpack-dartam</a> .</p>
  
  <p>I followed the set of commands to deploy the HTTP server built with Dart to Heroku and once I try to push the app to Heroku (git push heroku master) I receive the following error: </p>
  
  <pre><code>    remote:   End-of-central-directory signature not found.  Either 
      remote:   this file is not a zipfile, or it constitutes one disk of 
      remote:   a multi-part archive.  In the latter case the central 
      remote:   directory and zipfile comment will be found on the last 
      remote:   disk(s) of this archive.
      remote: unzip:  cannot find zipfile directory in one of dart-
      remote:         sdk.zip or dart-sdk.zip.zip, and cannot find dart-
      remote:         sdk.zip.ZIP, period.
      remote:  !     Push rejected, failed to compile Dart app.
      remote: 
      remote:  !     Push failed
      remote: Verifying deploy...
      remote:  
      remote: !   Push rejected to testdartapp.
      remote: 
      To https://git.heroku.com/testdartapp.git
       ! [remote rejected] master -&gt; master (pre-receive hook declined)
      error: failed to push some refs to 
      'https://git.heroku.com/testdartapp.git'
  </code></pre>
  
  <p>I am attaching a screenshot of my terminal output: <a href="https://i.stack.imgur.com/jCks0.png" rel="nofollow noreferrer">Pushing app to Heroku</a></p>
  
  <p>Any advice is much appreciated! Thanks in advance.</p>