reveal.js presentation: Include speaker view plugin for HTML file hosted on website

[rempsyc]

Hi, I know this is last minute as my presentation is tomorrow haha, but I just realized that putting the HTML file resulting from my Quarto presentation script on my website, I cannot use the speaker view once I use the web version of the presentation.

It says that the site "refused to connect", probably because I am not running a local RStudio server. Strange thing though is that it should work based on the Quarto Demo. I looked at the source code but could not find where the speaker view plugin is mentioned.

I tried adding the speaker view plugin directly like this (as suggested here and here),

format:
    revealjs: 
        revealjs-plugins:
          - RevealNotes

but then it says that it cannot find that plugin. And I cannot find what code exactly to use to create the plugin (but it's supposed to be part of base Quarto/reveal.js? So not sure what I'm supposed to do).

I was hoping that I could use the speaker view even without bringing my own computer with RStudio, that I could access them online, just like for xaringan slides. Quarto version is 1.1.189. Thank you.

Edit: Also tried copying the entire original folder, not just the HTML, and I am still getting this error, so am a bit puzzled.

My YAML header looks like this currently:

format:
    revealjs: 
        theme: solarized
        slide-number: true
        embed-resources: true
        standalone: true
editor: source
css: styles.css

(So standalone is already set to true)