在将图像导出到Imgur Guest或ImmIO Guest 时出现以下错误。（对所有访客上传服务器抛出相同的错误）
连接时出错
malformed JSON string, neither array, object, number, string or atom, at character offset 0 (before "(end of string)") at /usr/share/shutter/resources/system/upload_plugins/upload/Minus.pm line 145.
请看下面的屏幕截图
