Hakyll not able to load a post even though it outputs it to `_site`

[Mon Aaraj]

I've been facing issues using Hakyll. I'm trying to move to using Hakyll from Slick, and one thing I'm finding is that the errors are definitely very confusing and not as helpful as they could be. here's what i ran:

```

% cabal run exe:site -- rebuild

Removing _site...

Removing _cache...

Removing _cache/tmp...

Initialising...

  Creating store...

  Creating provider...

  Running rules...

Checking for out-of-date items

Compiling

  updated web/css/style.css

  updated web/images/github-logo.svg

  updated web/images/mastodon-logo.svg

  updated web/templates/atom.xml

  updated web/templates/footer.html

  updated web/templates/header.html

  updated web/templates/post-list.html

  updated web/templates/post.html

  updated web/templates/default.html

  updated style.css

  updated web/posts/2023-07-20-hello-world.md

  [ERROR] Hakyll.Core.Compiler.Require.load: web/posts/2023-07-20-hello-world.md (snapshot content) was not found in the cache, the cache might be corrupted or the item you are referring to might not exist

```

here's my app/Main.hs: https://paste.rs/i9TiD.hs

and here's my tree: https://paste.rs/Tejku.txt

here's the `web/posts/2023-07-20-hello-world.md` file: https://paste.rs/DJ3vA.txt

Strangely enough, Hakyll seems to have outputted this follder to `_site` anyways. Weird.