Can HTML subtables without captions be rendered as PDFs?

[IULibScholComm]

Description

Can subtables in HTML (rather than markdown) be rendered as PDFs when those subtables lack subcaptions?

When I do so, I get a lua error: "C:/Program Files/Quarto/share/filters/main.lua:17131: attempt to index a nil value" (see below)

Error running filter C:/Program Files/Quarto/share/filters/main.lua:
C:/Program Files/Quarto/share/filters/main.lua:17131: attempt to index a nil value
stack traceback:
C:/Program Files/Quarto/share/filters/main.lua:16834: in function 'latexPanel'
C:/Program Files/Quarto/share/filters/main.lua:16788: in field 'render'
C:/Program Files/Quarto/share/filters/main.lua:835: in local 'filter_fn'
C:/Program Files/Quarto/share/filters/main.lua:302: in function <C:/Program Files/Quarto/share/filters/main.lua:292>
(...tail calls...)
[C]: in ?
[C]: in method 'walk'
C:/Program Files/Quarto/share/filters/main.lua:224: in function <C:/Program Files/Quarto/share/filters/main.lua:214>
(...tail calls...)
C:/Program Files/Quarto/share/filters/main.lua:936: in local 'callback'
C:/Program Files/Quarto/share/filters/main.lua:954: in upvalue 'run_emulated_filter_chain'
C:/Program Files/Quarto/share/filters/main.lua:990: in function <C:/Program Files/Quarto/share/filters/main.lua:987>
stack traceback:
C:/Program Files/Quarto/share/filters/main.lua:224: in function <C:/Program Files/Quarto/share/filters/main.lua:214>
(...tail calls...)
C:/Program Files/Quarto/share/filters/main.lua:936: in local 'callback'
C:/Program Files/Quarto/share/filters/main.lua:954: in upvalue 'run_emulated_filter_chain'
C:/Program Files/Quarto/share/filters/main.lua:990: in function <C:/Program Files/Quarto/share/filters/main.lua:987>

Here is my minimal example:

---
title: "test"
format: pdf
---

:::: {#tbl-test layout-ncol="2"}

::: {#tbl-test1}

```{=html}
<table>
  <thead>
    <tr>
      <th>test</th>
      <th>test</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>test</td>
      <td>test</td>
    </tr>
  </tbody>
</table>
```

:::

::: {#tbl-test2}

```{=html}
<table>
  <thead>
    <tr>
      <th>test</th>
      <th>test</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>test</td>
      <td>test</td>
    </tr>
  </tbody>
</table>
```

:::

Test
::::

When the subtables have subcaptions, everything works fine, but when they lack subcaptions, I get the lua error.

I'm using Quarto 1.4.59 on Windows 10 Enterprise.

Thank you for your help!

[cscheid]

This is a bug. Thank you for the clean repro!

[cderv]

Tracked now in

• HTML subtables without captions cause a crash in format: pdf #8656