400Bad Request

由于语法无效，服务器无法理解该请求。 客户端不应该在未经修改的情况下重复此请求。

The server cannot or will not process the request due to something that is perceived to be a client error (e.g., malformed request syntax, invalid request message framing, or deceptive request routing).

• Source: RFC7231 Section 6.5.1