Update app.py

app.py

@@ -330,7 +330,7 @@ async def chat_completions(request: Request):
         
         # 获取headers
         headers = {
-            "Authorization": f"Bearer {get_next_key()}",
+            "Authorization": f"Bearer {next(key_cycle)}",  # 使用 key_cycle 而不是 get_next_key
             "Content-Type": "application/json",
             "Accept": "text/event-stream" if body_json.get("stream") else "application/json"
         }