fix shared session id

app.py

@@ -17,6 +17,8 @@ def generate_response(user_message, cid, history=None):
     
     if history is None:
         history = []
+    if cid = "":    
+        cid = str(uuid.uuid4())
         
     history.append(user_message)
      
@@ -68,7 +70,7 @@ custom_css = """
 """
 
 with gr.Blocks(analytics_enabled=False, css=custom_css) as demo:
-    cid = gr.State(str(uuid.uuid4()))
+    cid = gr.State("")
 
     with gr.Row():
         with gr.Column(scale=1):