Hello, just update your launcher to the latest version and choose latest beta to be able to explore the example projects. You can always switch back to 3.8 the next time you run Spine by choosing latest stable.

您好，只需将您的启动器更新到最新版本并选择最新的测试版即可探索示例项目。 您可以在下次运行 Spine 时通过选择最新的稳定版本切换回 3.8。

Or get the examples manually from here:
或者从这里手动获取示例：
https://github.com/EsotericSoftware/spine-runtimes/tree/3.8/examples