> For the complete documentation index, see [llms.txt](https://devworkshops.gitbook.io/masteringvuejs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://devworkshops.gitbook.io/masteringvuejs/beyond-the-basics/404-route-not-found.md).

# 404: Route Not Found?

Let's try going to the **/products** route and see what happens. Obviously, the system is not going to render anything, but it also doesn't fail.

![](/files/-LXGqj8QeC_JR9gOmkz5)

We'll change it, so if they user tries to go somewhere the system is not prepared for, we present a generic view to show the route doesn't exist. We'll create a new **NotFound.vue** file in the **views** folder and add the content below.

{% code title="NotFound.vue" %}

```markup
<template>
  <div>
    <h1>Oops!!! Route not found!</h1>
  </div>
</template>
```

{% endcode %}

We'll update the **router.js** file to include the generic route. It's important to point here that this route needs to be the last one so it's the fall back.

{% code title="router.js" %}

```javascript
...
{
    path: '*',
    name: 'not-found',
    component: () => import('./views/NotFound.vue')
}
...
```

{% endcode %}

Now if you try to go again to **/products**, here's what we're going to see.

![](/files/-LXGsqHodlKeDQXXDGL9)


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://devworkshops.gitbook.io/masteringvuejs/beyond-the-basics/404-route-not-found.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
