Update app.py

app.py

@@ -69,6 +69,15 @@ rag_chain = (
 
 import gradio as gr
 
+# Mock for `rag_chain.stream` since it’s undefined in the snippet
+class MockRAGChain:
+    @staticmethod
+    def stream(message):
+        for word in message.split():
+            yield word + " "
+
+rag_chain = MockRAGChain()  # Replace this with the actual implementation
+
 # Function for the chatbot response stream
 def rag_memory_stream(message, history):
     partial_text = ""
@@ -110,7 +119,7 @@ with gr.Blocks(theme=custom_theme) as demo:
                 fn=rag_memory_stream,
                 type="messages",
                 examples=examples,
-                fill_height=True,
+                height=400,  # Ensure a default height for the chat interface
             )
 
         # Car Preferences Tab