Infinite loop when accessing certain routes directly

[mcmxcdev]

Describe the bug
I was made aware of a user of my website that there is a nasty infinite loop occuring: https://github.com/mhatvan/markushatvan.com/issues/17

The infinite loop ONLY occurs on the pages /blog, /tags and /categories when accessing it directly on markushatvan.com
For example: markushatvan.com/tags fails while markushatvan.com/about works.

If you check the screenshot that I attached, these are exactly the three url slugs that are outputted from @sveltejs/adapter-static which get processed to do a 301.

To Reproduce
I was not able to reproduce this locally with a dev or prod build, it seems to occur in combination with Netlify deployment on actual production.

Expected behavior
All pages are working without infinite loop.

Information about your SvelteKit Installation:

Diagnostics

• Your browser: Brave Browser 1.23.75

• Your adapter (e.g. Node, static, Vercel, Begin, etc...): adapter-static

Severity
Bad, since users can't acess certain links.

Additional context

[babichjacob]

Possibly related to #733

[benmccann]

It's hard to know what might be occurring here without a reproduction. Do you have code that you can share?

[mcmxcdev]

The whole repo is open source, this is one of the routes: https://github.com/mhatvan/markushatvan.com/tree/master/src/routes/categories

I could imagine what happens is that SvelteKit removes the trailing slash while Netlify wants to add a trailing slash, ending up in an endless redirect.

[benmccann]

Ah, yeah, it looks like Netlify adds a trailing slash: https://docs.netlify.com/routing/redirects/redirect-options/#trailing-slash. You might try turning off their Pretty URLs feature to see if it fixes it for you

I'll close as a duplicate of #733