Update app.py

app.py

@@ -97,10 +97,20 @@ with gr.Blocks() as demo:
     # Event handler for changing the API key
     change_api_key.click(fn=enable_api_box, outputs=[enable_box])
 
-    # Event handler for uploading a PDF
-    pdf_upload = gr.UploadButton("📁 Upload a PDF", file_types=[".pdf"]) 
-    pdf_upload.upload(fn=render_first, inputs=[pdf_upload], outputs=[show_img])
+    
+def render_first(pdf_file): 
+    # ... Logic to process the PDF 
+    # ... Generate the first image
+    return image  
 
+with gr.Blocks() as demo:
+    # ... your UI setup ...
+
+    pdf_upload = gr.UploadButton("📁 Upload a PDF", file_types=[".pdf"])  
+
+    # ... other event handlers ... 
+
+    pdf_upload.upload(fn=render_first, inputs=[pdf_upload], outputs=[show_img]) 
     # Event handler for submitting text and generating response
     submit_btn.click(
         fn=add_text,