3.5正常使用没有任何问题,但是4.0提问半天没反应,然后提示“An error occurred. Either the engine you requested does not exist or there was another issue processing your request. If this issue persists please contact us through our help center at OpenAI Help Center”,换了浏览器和节点都没用,清了cookie也没用,这种该怎么解决?