找到了解决问题的方法。

Found a way around the problem.

正在生成访问令牌，但由于某种原因，它并未生成更新ApiClient对象中的令牌，并且仅使用旧令牌。
因此，现在每次令牌过期时，我都只是创建一个新的ApiClient对象，而不是用新令牌替换旧令牌。

The access token was being generated but for some reason it was not updating the token in the ApiClient Object and was using the old token only. So now I am just creating a new ApiClient Object every time the token expires instead of replacing the old token with the new one.