title: Heroku pandas numpy error "Unable to import required dependencies:\n"
body: <p>this is my first time deploying flask app to heroku. I have been working on it all day but getting this error I tried removing requirements adding requirements but nothing seems to work so far.</p>
  <pre><code>    2020-06-30T12:39:52.622174+00:00 app[web.1]: File &quot;/app/app.py&quot;, line 18, in &lt;module&gt;
  2020-06-30T12:39:52.622175+00:00 app[web.1]: import pandas as pd
  2020-06-30T12:39:52.622175+00:00 app[web.1]: File &quot;/app/.heroku/python/lib/python3.6/site-packages/pandas/__init__.py&quot;, line 17, in &lt;module&gt;
  2020-06-30T12:39:52.622176+00:00 app[web.1]: &quot;Unable to import required dependencies:\n&quot; + &quot;\n&quot;.join(missing_dependencies)
  2020-06-30T12:39:52.622176+00:00 app[web.1]: ImportError: Unable to import required dependencies:
  2020-06-30T12:39:52.622177+00:00 app[web.1]: numpy:
  2020-06-30T12:39:52.622177+00:00 app[web.1]: Importing the multiarray numpy extension module failed.  Most
  2020-06-30T12:39:52.622178+00:00 app[web.1]: likely you are trying to import a failed build of numpy.
  2020-06-30T12:39:52.622178+00:00 app[web.1]: If you're working with a numpy git repo, try `git clean -xdf` (removes all
  </code></pre>