图片上传错误（Image upload error）

请教一下大家，我在写文章时想插入图片，但是每一次都提示我“上存错误”，我该怎样操作才能正确上存图片呢？谢谢！
Ask everyone, I want to insert pictures when writing articles, but every time remind me " save error", how should I operate to save the picture correctly? Thank you very much