Explain the problem.
I have a markdown doc that I want to convert to a Reveal.js presentation.

I set it up with a minimal YAML block at the top, so the first dozen or so lines of the document look like this:

% My awesome presentation
% Adam Rice

# My awesome presentation

::: notes

Some notes

:::

---
## Let's get into it

Here's the error I was getting:

YAML parse exception at line 3, column 2,
while scanning a block scalar:
did not find expected comment or line break

After some trial and error, I discovered that the real parsing problem is on the penultimate line above: the --- is not separated from the ## Let's get into it line by a blank line.

Pandoc version?
3.4, on MacOS