TypeError: 'NoneType' object is not subscriptable

[RiccardoRiglietti]

When running the main.py file I get the error:

127.0.0.1 - - [15/Sep/2022 18:57:41] "GET /getRandomImage?category=forever_alone HTTP/1.1" 500 -
Traceback (most recent call last):
  File "/home/riccardo/anaconda3/lib/python3.8/site-packages/flask/app.py", line 2548, in __call__
    return self.wsgi_app(environ, start_response)
  File "/home/riccardo/anaconda3/lib/python3.8/site-packages/flask/app.py", line 2528, in wsgi_app
    response = self.handle_exception(e)
  File "/home/riccardo/anaconda3/lib/python3.8/site-packages/flask/app.py", line 2525, in wsgi_app
    response = self.full_dispatch_request()
  File "/home/riccardo/anaconda3/lib/python3.8/site-packages/flask/app.py", line 1822, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/home/riccardo/anaconda3/lib/python3.8/site-packages/flask/app.py", line 1820, in full_dispatch_request
    rv = self.dispatch_request()
  File "/home/riccardo/anaconda3/lib/python3.8/site-packages/flask/app.py", line 1796, in dispatch_request
    return self.ensure_sync(self.view_functions[rule.endpoint])(**view_args)
  File "/home/riccardo/Memeify/code/main.py", line 35, in getRandomImage
    data["upperText"] = random_caption[0]
TypeError: 'NoneType' object is not subscriptable