fix to update keyerror

Traceback (most recent call last):

File "/usr/local/lib/python3.10/site-packages/gradio/queueing.py", line 667, in process_events

response = await route_utils.call_process_api(

File "/usr/local/lib/python3.10/site-packages/gradio/route_utils.py", line 349, in call_process_api

output = await app.get_blocks().process_api(

File "/usr/local/lib/python3.10/site-packages/gradio/blocks.py", line 2284, in process_api

data = await self.postprocess_data(block_fn, result["prediction"], state)

File "/usr/local/lib/python3.10/site-packages/gradio/blocks.py", line 2038, in postprocess_data

kwargs = state[block._id].constructor_args.copy()

File "/usr/local/lib/python3.10/site-packages/gradio/state_holder.py", line 84, in __getitem__

block = self.blocks_config.blocks[key]

KeyError: 7

app.py

@@ -153,7 +153,9 @@ with gr.Blocks(title="PDF Chatbot") as demo:
         textbox=gr.Textbox(placeholder="Type your question here...", scale=7),
         examples=["What is the main topic of the document?", "Summarize the key findings.", "Who are the authors?"],
         title="Chat Interface",
-        theme="soft"
+        theme="soft",
+        # Fix: Add the state as an additional input to the ChatInterface
+        additional_inputs=[state]
     )
 
     # Initially hide the chat interface until a file is processed