TypeError: issubclass() arg 1 must be a class

[tejasparekh83]

Getting this error while running python app.py

Traceback (most recent call last):
File "/Users/tejas/Desktop/python/chatyourdata/app.py", line 93, in
submit.click(chat, inputs=[openai_api_key_textbox, message, state, agent_state], outputs=[chatbot, state])
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/gradio/events.py", line 132, in call
dep, dep_index = self.trigger.set_event_trigger(
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/gradio/blocks.py", line 217, in set_event_trigger
check_function_inputs_match(fn, inputs, inputs_as_dict)
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/gradio/utils.py", line 872, in check_function_inputs_match
if not is_special_typed_parameter(name):
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/gradio/utils.py", line 861, in is_special_typed_parameter
is_event_data = issubclass(parameter_types.get(name, int), EventData)
TypeError: issubclass() arg 1 must be a class

[hansvdam]

happens to me too from gradio 3.28, should have been fixed in gradio 3.29, but still get it in 3.30. Annoying...
(gradio-app/gradio#4015), do this to temporarily fix: