1if__name__=='__main__':
2  app.debug=True
3  app.run('0.0.0.0', port=5001) #port can be anything higher than 5000.
4  
5  #this solution is for an OSError and PermissionError
6  #Make sure to run it on a virual environment for Flask, Python.1This can happen either becuase the file is in use by another proccess or
2your user doesn't have access