"not found" messages when using plotly + embed-resources in revealjs

[rodrigo-j-goncalves]

Description

Quarto version: 1.8.24
OS: Ubuntu 22.04

In VSC, I see these 404 not found messages in the terminal when running (in preview) the script below.

Watching files for changes
/extensions/MathMenu.js (404: Not Found)
/extensions/MathZoom.js (404: Not Found)

This only happens when embed-resources: true

I'm aware that a limitation of this feature is that "resources that are loaded dynamically through JavaScript cannot be incorporated; as a result, some advanced features (e.g. zoom or speaker notes) may not work in an offline “self-contained” reveal.js slide show."
Actually, the messages are there, but it seems to be harmless as far as I can tell (didn't explore much deeper with plotly interactive plots yet).

As far as I can see, I have all the extensions updated in VSC, I guess it is not related to that.

Anyway, I just wonder if it is it something I need to worry/do something about?.

Thanks!!

---
format: revealjs

execute:
  eval: true
  echo: true

embed-resources: true
---

##  Extension not found

When using this presentation in VS code, I see the following messages:


I see these messages in the terminal:

|  [/extensions/MathMenu.js (404: Not Found)]{style="color: #cc0000"}
|  [/extensions/MathZoom.js (404: Not Found)]{style="color: #cc0000"}


## Plotly script

```{python}

#| echo: false
#| output: true

import plotly.graph_objects as go
import numpy as np

C = 0
x_range = np.linspace(-10, 10, 100)
y_initial = np.full_like(x_range, C)
fig = go.Figure()
fig.add_trace(
    go.Scatter(
        x=x_range,
        y=y_initial,
        mode='lines',
        name=f'Y = {C:.2f}',
        line=dict(width=3)
    )
)

fig

```

[mcanouil]

Did you look for related or similar issues/discussions such as:

• Plotly offline embed-resources not working #10706

[cscheid]

I think you answered your own question:

This only happens when embed-resources: true

I'm aware that a #3021 (comment) is that "resources that are loaded dynamically through JavaScript cannot be incorporated; as a result, some advanced features (e.g. zoom or speaker notes) may not work in an offline “self-contained” reveal.js slide show."
Actually, the messages are there, but it seems to be harmless as far as I can tell (didn't explore much deeper with plotly interactive plots yet).

We don't control the javascript used by plotly, and so we cannot tell you if it is it something you need to worry/do something about; you'll need to independently test the plotly features you need.

[mcanouil]

FYI, the two libraries are MathJax extensions that plotly loads.

[rodrigo-j-goncalves]

In case someone arrives at this thread, I share this for reference.

These are the error messages in my terminal (while previewing the revealjs presentation):

---

I ended up fixing the error messages by explicitly loading MathJax in the YAML section:

include-in-header: 
   - text: '<script src="http://cdn.mathjax.org/mathjax/latest/MathJax.js"></script>'

This way, I don't have any 404 errors when using embed-resources.

---

PS. I acknowledge that loading the entire MathJax might not be necessary at all. It does suppress the error messages, but those may be harmless (I didn't see anything strange).