----->类和方法__25+[Manager noticeRequest:]_block_invoke399----->错误信息Error Domain=NSCocoaErrorDomain Code= "未能完成操作。（“Cocoa”错误 3840。）" (JSON text did not start with array or object and option to allow fragments not set.) UserInfo=0x14f7aa30 {NSDebugDescription=JSON text did not start with array or object and option to allow fragments not set., NSUnderlyingError=0x14faebd0 "Request failed: not found (404)"}