You might also get error message 404 if a page isn't found, just like you see in the browser.
如果没有找到页面,就可能会得到错误消息 404,就像您在浏览器中看到的那样。
If it has, an error message is created and you redirect to the index page.
如果是,将创建一个错误消息并重定向到索引页面。
The error message is isolated from other data, and you can easily recheck the page when you have made the change.
错误消息已与其他数据分离,并且在做出更改后可以轻松地重新查看页面。
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