简单地运行两次会产生错误，因为相同的星星名称（作为表的主键）使用了两次，则会由于重复的主键值导致错误。

Simply running it twice will produce an error, because the same star names (which are the primary key for the table) are used again, causing an error with duplicate primary key values.

youdao

比起其他原因，这类寻找更多地是由于 URL 的拼写错误而致，但链接过时、后端的错误配置、不同点的 URL 残缺等因素也不容小觑。

Probably this happens more often because of typos in URLs than for any other reason, but link rot, back-end misconfiguration, URL mangling at various points, and other causes contribute.

youdao