Improve 404 page

[mydea]

Problem Statement

If you go to a page that does not exist, e.g.:
https://docs.sentry.io/platforms/javascript/DOES-NOT-EXIST

You get a very generic 404 page. It would be nice to show the 404 page in the context of the platform/guide that is in the URL - this makes it much easier to continue from a broken link.

Solution Brainstorm

Something like this(formatting is off, but you get the point hopefully xD)

[Shubhdeep12]

Hi,

I have a way to do this. but I am not sure if that is an optimal way 😅

I'll raise a PR for this shortly.

here is the outcome of that -

[hubertdeng123]

@mydea Do you have an idea who would be the best candidate to review the PR?

[mydea]

@stephanie-anderson is this solved in the new design? still seems somewhat the same to me: https://docs.sentry.io/platforms/javascript/asdasd/

[a-hariti]

We couldn't add the described features due fundamental limitations of Next.js + our unique SSR needs

the current state seemed like a good compromise

You can follow my question on the Next.js discord here