title: Heroku Deploying App
body: <p>I have a problem with delpoying my webapp to heroku. A year ago other users had a similar problem: <a href="https://stackoverflow.com/questions/42942036/deploying-flask-app-to-heroku-error">deploying flask app to heroku error</a> However, the offered solution does not work for me. Any other ideas? Would really appreciate help.
  Thanks upfront.</p>
  
  <p>Here is my log:</p>
  
  <pre><code>-----&gt; Python app detected
  -----&gt; Installing python-3.6.5
  -----&gt; Installing pip
  -----&gt; Installing requirements with pip
         Exception:
         Traceback (most recent call last):
           File "/app/.heroku/python/lib/python3.6/site-packages/pip/basecommand.py", line 215, in main
             status = self.run(options, args)
           File "/app/.heroku/python/lib/python3.6/site-packages/pip/commands/install.py", line 312, in run
             wheel_cache
           File "/app/.heroku/python/lib/python3.6/site-packages/pip/basecommand.py", line 295, in populate_requirement_set
             wheel_cache=wheel_cache):
           File "/app/.heroku/python/lib/python3.6/site-packages/pip/req/req_file.py", line 93, in parse_requirements
             for req in req_iter:
           File "/app/.heroku/python/lib/python3.6/site-packages/pip/req/req_file.py", line 158, in process_line
             isolated=isolated, options=req_options, wheel_cache=wheel_cache
           File "/app/.heroku/python/lib/python3.6/site-packages/pip/req/req_install.py", line 195, in from_line
             if (os.path.isdir(p) and
           File "/app/.heroku/python/lib/python3.6/genericpath.py", line 42, in isdir
             st = os.stat(s)
         ValueError: embedded null byte
   !     Push rejected, failed to compile Python app.
   !     Push failed
  </code></pre>