Addind Chat functions to QA retrival chain

app.py

@@ -63,7 +63,7 @@ def youtube_chat(youtube_link,API_key,llm='HuggingFace',temperature=0.1,max_toke
     if llm == 'HuggingFace':
         chat = chatops.get_hugging_face_model(
                             model_id="tiiuae/falcon-7b-instruct",
-                            key=API_key,
+                            API_key=API_key,
                             temperature=temperature,
                             max_tokens=max_tokens
                             )
@@ -123,9 +123,10 @@ title ="""<div
         </div>
 """
 
-with gr.Blocks(css=css) as demo:
-    with gr.Column(elem_id="col-container"):
-        gr.HTML(title)
+with gr.Blocks() as demo:
+    with gr.Row():
+        with gr.Column(elem_id="col-container"):
+            gr.HTML(title)
 
     with gr.Group():
         chatbot = gr.Chatbot(height=300)