无法连接到许可服务器。

在当前版本的IronPdf (2024.10.x) 中，即使有活跃的互联网连接，有些客户可能会遇到以下异常错误：

Exception: IronPdf was unable to establish a connection to the licensing server. A valid internet connection is required for TEAM-type License Keys. In restricted environments, you need to whitelist: https://licensingapimanager.azure-api.net. For projects that require offline air-gapped environments with unlimited developers, projects, and locations, please consider the Unlimited Enterprise License at https://ironpdf.com/licensing/?utm_source=errormsg. For help, please reach out to us at https://ironsoftware.com