Cuz you didn‘t link to an image. It’s a HTML page with a single-image album. The raw image file is at https://i.imgur.com/a2NZ5VH.jpeg (use “Open image in new tab”) so you need to write

![Anyway, the Gates of Hell are that way. See you.](https://i.imgur.com/a2NZ5VH.jpeg)

(the alt text is optional)
for

^{Sauce: Gabriel Dropout ep. 9, 17:52}

More on images in Lemmy comments