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错误

所有API方法均使用标准HTTP响应代码来表示成功或失败。

状态码	原因
`200`	Success - with the result in the response content
`204`	Success - with no further content
`400`	Bad request - see response format below
`401`	Not authorized - see Authentication
`404`	Not found - a resource wasn’t found
`409`	Version mismatch - see `POST /flows`
`500`	Server Error - something went wrong on the server

对于400响应码，响应体将是一个包含以下字段的JSON对象：

字段	描述
`code`	The error code
`message`	The description of the error

{
  code: "module_already_loaded",
  message: "Module already loaded"
}

代码	描述
`unexpected_error`	An unexpected error occurred
`invalid_request`	The request contains invalid parameters
`settings_unavailable`	The storage system does not support changing settings
`module_already_loaded`	The requested module is already loaded
`type_in_use`	The request is attempting to remove/disable a node type that is currently being used
`invalid_api_version`	The request specified an invalid api version in the `Node-RED-API-Version` header

Node-RED: 面向事件驱动应用的低代码编程平台。