specified it to run 8080 on wsgi.py file

app.py

@@ -86,3 +86,5 @@ def download_assessment(filename):
         app.logger.exception(f"Error serving assessment file: {str(e)}")
         abort(500) 
 
+if __name__ == '__main__':
+    app.run(debug=True, port=int(os.environ.get('PORT', 5000)))
\ No newline at end of file

wsgi.py

@@ -8,4 +8,4 @@ sys.modules['flask'].Markup = Markup
 logging.basicConfig(stream=sys.stderr)
 
 if __name__ == '__main__':
-    application.run(host='0.0.0.0', port=8080)
+    application.run(host='0.0.0.0', port=int(os.environ.get('PORT', 8080)))