你收到500错误，因为网络服务器上运行的代码以某种方式崩溃。你显然在你的请求中做了一些事情，服务器没有不喜欢，没想到，也不知道如何处理。

You're getting a 500 error back because the code running on the webserver crashes somehow. You apparently did something in your request that the server didn't like, didn't expect, and doesn't know how to handle.