Image rendering (image-not-found)

Hi!
I’m trying to include an image in documentation managed by Hugo.
I’m using https://getdoks.org/ so I have a content directory and docs within it.
Layout is:
content/docs/prologue:

  • diagram.jpeg
  • _index.md
  • introduction.md

I tried including the image in introduction.md using

![asdasd](./diagram.jpeg)

but this leads to image-not-found error. funny part is if I don’t include it in Markdown, I can access the image in that path via the webserver (http://localhost:1313/docs/prologue/diagram.jpeg)
BTW if I render the markdown locally without Hugo it shows the image.

Any help would be welcome. Thanks!