remove cookie from user_id generation if cookies does not exists in header

app.py

@@ -741,7 +741,11 @@ with demo:
         ip_address = request_headers['host']
         user_agent = request_headers['user-agent']
         accept_language = request_headers['accept-language']
-        cookie = request_headers['cookie']
+        if 'cookie' in request_headers:
+            cookie = request_headers['cookie']
+        else:
+            cookie = 'empty'
+            print(f'cookie not in request_headers: {request_headers}')
 
         # 将信息组合成一个字符串
         combined_info = f"{ip_address}-{user_agent}-{accept_language}-{cookie}"