Added missing iface declaration

app.py

@@ -11,7 +11,13 @@ def update_values(context):
     state.context = context 
     return state.context
 
-with gr.Blocks() as demo:  # Create a Blocks context
+with gr.Blocks() as demo:
+    iface = gr.Interface( 
+        fn=answer_question, 
+        inputs=["text", "text"], 
+        outputs="text"
+    )
+    
     project_data = gr.Textbox(label="Project Data", lines=2, value=state.context) 
     output = gr.Textbox(label="Output")