Simplify outputs to avoid gradio schema error (remove hidden state)

app.py

@@ -505,7 +505,7 @@ def process_receipt(image):
     if image is None:
         return (
             "<div style='padding: 20px; text-align: center;'>Upload an image to begin</div>",
-            None, "", "", ""
+            None, "", ""
         )
     
     if not isinstance(image, Image.Image):
@@ -632,7 +632,7 @@ def process_receipt(image):
     {fields_html}
     """
     
-    return summary_html, ocr_image, ocr_text, "", json.dumps(results, indent=2)
+    return summary_html, ocr_image, ocr_text, json.dumps(results, indent=2)
 
 
 # ============================================================================
@@ -685,12 +685,10 @@ with gr.Blocks(title="Receipt Processing Agent", theme=gr.themes.Soft(), css=CUS
     with gr.Accordion("Raw Results (JSON)", open=False):
         results_json = gr.Textbox(label="Full Results", lines=15)
     
-    hidden_state = gr.Textbox(visible=False)
-    
     process_btn.click(
         fn=process_receipt,
         inputs=[input_image],
-        outputs=[agent_summary, ocr_image_output, ocr_text_output, hidden_state, results_json]
+        outputs=[agent_summary, ocr_image_output, ocr_text_output, results_json]
     )
     
     gr.Markdown("""