Update app.py

app.py

@@ -176,7 +176,7 @@ with gr.Blocks() as demo:
         with gr.Group():
             gr.Markdown(f'<p style="text-align:center">Get your Open AI API key <a href="https://platform.openai.com/account/api-keys">here</a></p>')
             openAI_key = gr.inputs.Textbox(label='Enter your OpenAI API key here')
-            files = gr.inputs.File(file_count="multiple", file_types=[".pdf"], label="Upload PDF files")
+            files = gr.inputs.File(file_count="multiple", accept=".pdf", label="Upload PDF files")
             question = gr.inputs.Textbox(label='Enter your question here')
             btn = gr.Button(value='Submit')
 
@@ -186,5 +186,3 @@ with gr.Blocks() as demo:
         btn.click(question_answer, inputs=[files, question, openAI_key], outputs=[answer])
 
 demo.launch()
-
-