Update app.py

app.py

@@ -129,7 +129,7 @@ with gr.Blocks() as demo:
             approach = create_approach_dropdown()
             chatbot = gr.Chatbot()
             msg = gr.Textbox()
-            image = gr.Image(type="pil", label="Upload Image (optional)", optional=True)
+            image = gr.Image(type="pil", label="Upload Image (optional)")
             with gr.Row():
                 submit = gr.Button("Submit")
                 clear = gr.Button("Clear")
@@ -160,7 +160,7 @@ with gr.Blocks() as demo:
             
             compare_input = gr.Textbox(label="Enter your message for comparison")
             compare_button = gr.Button("Compare")
-            compare_image = gr.Image(type="pil", label="Upload Image for Comparison", optional=True)
+            compare_image = gr.Image(type="pil", label="Upload Image for Comparison")
             
             with gr.Row():
                 output1 = gr.Textbox(label="Response 1")