If my version of pandoc would be useful, it is:

% pandoc --version
pandoc 3.1.2
Features: +server +lua
Scripting engine: Lua 5.4
User data directory: /Users/saprm3/.local/share/pandoc
Copyright (C) 2006-2023 John MacFarlane. Web:  https://pandoc.org
This is free software; see the source for copying conditions. There is no
warranty, not even for merchantability or fitness for a particular purpose.

On Friday, June 9, 2023 at 9:41:24 AM UTC+1 Richard Morey wrote:

> I've posted this on StackOverflow here 
> <https://stackoverflow.com/questions/76422082/pandoc-error-10-when-compiling-document-and-fetching-from-fonts-gstatic-com> 
> but have not gotten any interest in several days, so I'm posting here.
>
> I'm having trouble consistently compiling a particular document with 
> rmarkdown::render. I cannot reproduce the issue reliably, unfortunately 
> (it happens roughly 1/3 of the time; consostent with it being a network 
> error, maybe?), but when it fails, I get the error: 
>
> pandoc document conversion failed with error 10 
>
> from rmarkdown. The "10" is the return code from the system command that 
> runs pandoc here 
> <https://github.com/rstudio/rmarkdown/blob/10863429024e236389a48f40ab1485620d53d311/R/pandoc.R#L107>
> .
>
> When I set pandoc to give debugging information with --verbose the 
> following lines are the last ones in stderr:
> [INFO] Fetching 
> https://fonts.gstatic.com/s/opensans/v34/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTSKmu1aB.woff2... 
>
> [INFO] Fetching 
> https://fonts.gstatic.com/s/opensans/v34/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTSumu1aB.woff2... 
>
> [INFO] Fetching 
> https://fonts.gstatic.com/s/opensans/v34/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTSOmu1aB.woff2... 
>
> [INFO] Fetching 
> https://fonts.gstatic.com/s/opensans/v34/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTSymu1aB.woff2... 
>
> [INFO] Fetching 
> https://fonts.gstatic.com/s/opensans/v34/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTS2mu1aB.woff2... 
>
> [INFO] Fetching 
> https://fonts.gstatic.com/s/opensans/v34/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTSCmu1aB.woff2... 
>
> [INFO] Fetching 
> https://fonts.gstatic.com/s/opensans/v34/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTSGmu1aB.woff2... 
>
> Error : pandoc document conversion failed with error 10 
>
> The last line varies, but it always seems to be one of these fonts that is 
> the last thing pandoc reports before the error (there are 24 of these font 
> fetches in this particular document, as shown by the output in a successful 
> compile).
>
> This leads me to believe that there is a problem in fetching one of these 
> fonts, but there's no output that says what the problem actually *is*, 
> and Error 10 does not seem to be a valid error code from pandoc: pandoc 
> error codes 
> <https://github.com/jgm/pandoc/blob/c9825761338f56209f69782da0087f9e27fa577b/src/Text/Pandoc/Error.hs#L154>
> .
>
> I'm sort of stuck debugging until I figure this out.
>
> I also note there is a similar issue here: NYTimes and 538 Themes Give 
> Pandoc Error 10 <https://github.com/jthomasmock/gtExtras/issues/89> - as 
> a bonus, it even seems to be related to fonts.gstatic.com, but that out 
> seems to be more specific, including a [WARNING] that I don't see in mine.
>
> In case they are helpful, I've put the logs of a failure and success and 
> the pandoc command that was run in a gist here: logs 
> <https://gist.github.com/richarddmorey/c88bdc16ddc37ac5ff4f34b68cfcdd70>
>
> I'd appreciate any insights into what could cause this and how to fix it.
>
> Best,
> Richard
>

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