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EXTERNAL: OSError: [Errno 48] Address already in use

On Wednesday, June 27, 2018 at 12:17:28 PM UTC-4, Joaquin Henriquez wrote:
> >Subject: EXTERNAL: OSError: [Errno 48] Address already in use
> The best way to help if got you to put the relevant code here.

Last login: Wed Jun 27 12:45:08 on ttys000
192:~ TamaraB$ cd Desktop/Webapp/
192:Webapp TamaraB$ python3 vsearch4web.py
 * Serving Flask app "vsearch4web" (lazy loading)
 * Environment: production
   WARNING: Do not use the development server in a production environment.
   Use a production WSGI server instead.
 * Debug mode: on
Traceback (most recent call last):
  File "vsearch4web.py", line 18, in <module>
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/flask/app.py", line 943, in run
    run_simple(host, port, self, **options)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/werkzeug/serving.py", line 795, in run_simple
    s.bind(get_sockaddr(hostname, port, address_family))
OSError: [Errno 48] Address already in use
192:Webapp TamaraB$ 

> The error you are experiencing means that the Port you are trying to bind is already taken by another running process.

Why would another process be running?