Cloud9 Permission error when trying to Flask application created by template

Using the Code Star Wizard, I created a Flask-ELB application. When attempting to run the application (using the big green Run button) I first get an error that flask is not found. I install flask, now I get a permission denied error:

Creating a virtual environment and running "application.py" directly gives me a similar error.

 * Serving Flask app "application" (lazy loading)
 * Environment: production
   WARNING: This is a development server. Do not use it in a production deployment.
   Use a production WSGI server instead.
 * Debug mode: off
Traceback (most recent call last):
  File "/home/ec2-user/environment/stevej-newrelic/helloworld/application.py", line 37, in <module>
    port=int(options.port)
  File "/home/ec2-user/.local/lib/python3.6/site-packages/flask/app.py", line 990, in run
    run_simple(host, port, self, **options)
  File "/home/ec2-user/.local/lib/python3.6/site-packages/werkzeug/serving.py", line 1017, in run_simple
    inner()
  File "/home/ec2-user/.local/lib/python3.6/site-packages/werkzeug/serving.py", line 966, in inner
    fd=fd,
  File "/home/ec2-user/.local/lib/python3.6/site-packages/werkzeug/serving.py", line 790, in make_server
    host, port, app, request_handler, passthrough_errors, ssl_context, fd=fd
    super().__init__(server_address, handler)  # type: ignore
  File "/usr/lib64/python3.6/socketserver.py", line 456, in __init__
    self.server_bind()
  File "/usr/lib64/python3.6/http/server.py", line 136, in server_bind
    socketserver.TCPServer.server_bind(self)
  File "/usr/lib64/python3.6/socketserver.py", line 470, in server_bind
    self.socket.bind(self.server_address)
PermissionError: [Errno 13] Permission denied