Quarto doc fails to render from shiny app in Positron, but works in RStudio

[mlfearon]

Hi,
I have a bit of a unique use case where I have built a shiny app that collects user inputs and passes those inputs as parameters into a quarto doc and renders the quarto doc in HTML and Typst. This app runs fine locally when I run it from RStudio, but I am noticing that the quarto portion of the app fails when I run it on Positron. I think that some piece of metadata is not getting passed to the quarto doc. I have attached a subset of the code output that I get in the console when I try to use the app to render the quarto doc. It seems to be related to colors used in functions in the bslib package.

Any help with this would be appreciated!
Thanks,
Michelle

WARNING: Found no color leading to 4.5:1 contrast ratio against #799D7B...
         on line 42:5 of ../../../../Library/Caches/org.R-project.R/R/renv/cache/v5/macos/R-4.4/aarch64-apple-darwin20/bslib/0.9.0/70a6489cc254171fb9b4a7f130f44dca/bslib/sass-utils/color-contrast.scss, in function `color-contrast`
         from line 10:11 of ../../../../Library/Caches/org.R-project.R/R/renv/cache/v5/macos/R-4.4/aarch64-apple-darwin20/bslib/0.9.0/70a6489cc254171fb9b4a7f130f44dca/bslib/lib/bs5/scss/mixins/_buttons.scss, in mixin `button-variant`
         from line 155:16 of ../../../../Library/Caches/org.R-project.R/R/renv/cache/v5/macos/R-4.4/aarch64-apple-darwin20/bslib/0.9.0/70a6489cc254171fb9b4a7f130f44dca/bslib/lib/bs5/scss/_buttons.scss
         from line 233:9 of stdin

WARNING: Found no color leading to 4.5:1 contrast ratio against #799D7B...
         on line 42:5 of ../../../../Library/Caches/org.R-project.R/R/renv/cache/v5/macos/R-4.4/aarch64-apple-darwin20/bslib/0.9.0/70a6489cc254171fb9b4a7f130f44dca/bslib/sass-utils/color-contrast.scss, in function `color-contrast`
         from line 19:20 of ../../../../Library/Caches/org.R-project.R/R/renv/cache/v5/macos/R-4.4/aarch64-apple-darwin20/bslib/0.9.0/70a6489cc254171fb9b4a7f130f44dca/bslib/lib/bs5/scss/mixins/_buttons.scss, in mixin `button-variant`
         from line 155:16 of ../../../../Library/Caches/org.R-project.R/R/renv/cache/v5/macos/R-4.4/aarch64-apple-darwin20/bslib/0.9.0/70a6489cc254171fb9b4a7f130f44dca/bslib/lib/bs5/scss/_buttons.scss
         from line 233:9 of stdin

WARNING: Found no color leading to 4.5:1 contrast ratio against #799D7B...
         on line 42:5 of ../../../../Library/Caches/org.R-project.R/R/renv/cache/v5/macos/R-4.4/aarch64-apple-darwin20/bslib/0.9.0/70a6489cc254171fb9b4a7f130f44dca/bslib/sass-utils/color-contrast.scss, in function `color-contrast`
         from line 10:11 of ../../../../Library/Caches/org.R-project.R/R/renv/cache/v5/macos/R-4.4/aarch64-apple-darwin20/bslib/0.9.0/70a6489cc254171fb9b4a7f130f44dca/bslib/lib/bs5/scss/mixins/_buttons.scss, in mixin `button-variant`
         from line 155:16 of ../../../../Library/Caches/org.R-project.R/R/renv/cache/v5/macos/R-4.4/aarch64-apple-darwin20/bslib/0.9.0/70a6489cc254171fb9b4a7f130f44dca/bslib/lib/bs5/scss/_buttons.scss
         from line 233:9 of stdin

WARNING: Found no color leading to 4.5:1 contrast ratio against #799D7B...
         on line 42:5 of ../../../../Library/Caches/org.R-project.R/R/renv/cache/v5/macos/R-4.4/aarch64-apple-darwin20/bslib/0.9.0/70a6489cc254171fb9b4a7f130f44dca/bslib/sass-utils/color-contrast.scss, in function `color-contrast`
         from line 19:20 of ../../../../Library/Caches/org.R-project.R/R/renv/cache/v5/macos/R-4.4/aarch64-apple-darwin20/bslib/0.9.0/70a6489cc254171fb9b4a7f130f44dca/bslib/lib/bs5/scss/mixins/_buttons.scss, in mixin `button-variant`
         from line 155:16 of ../../../../Library/Caches/org.R-project.R/R/renv/cache/v5/macos/R-4.4/aarch64-apple-darwin20/bslib/0.9.0/70a6489cc254171fb9b4a7f130f44dca/bslib/lib/bs5/scss/_buttons.scss
         from line 233:9 of stdin

WARNING: Found no color leading to 4.5:1 contrast ratio against #677f67...
         on line 42:5 of ../../../../Library/Caches/org.R-project.R/R/renv/cache/v5/macos/R-4.4/aarch64-apple-darwin20/bslib/0.9.0/70a6489cc254171fb9b4a7f130f44dca/bslib/sass-utils/color-contrast.scss, in function `color-contrast`
         from line 13:17 of ../../../../Library/Caches/org.R-project.R/R/renv/cache/v5/macos/R-4.4/aarch64-apple-darwin20/bslib/0.9.0/70a6489cc254171fb9b4a7f130f44dca/bslib/lib/bs5/scss/mixins/_buttons.scss, in mixin `button-variant`
         from line 146:16 of ../../../../Library/Caches/org.R-project.R/R/renv/cache/v5/macos/R-4.4/aarch64-apple-darwin20/bslib/0.9.0/70a6489cc254171fb9b4a7f130f44dca/bslib/lib/bs5/scss/_buttons.scss
         from line 233:9 of stdin

WARNING: Found no color leading to 4.5:1 contrast ratio against #708670...
         on line 42:5 of ../../../../Library/Caches/org.R-project.R/R/renv/cache/v5/macos/R-4.4/aarch64-apple-darwin20/bslib/0.9.0/70a6489cc254171fb9b4a7f130f44dca/bslib/sass-utils/color-contrast.scss, in function `color-contrast`
         from line 16:18 of ../../../../Library/Caches/org.R-project.R/R/renv/cache/v5/macos/R-4.4/aarch64-apple-darwin20/bslib/0.9.0/70a6489cc254171fb9b4a7f130f44dca/bslib/lib/bs5/scss/mixins/_buttons.scss, in mixin `button-variant`
         from line 146:16 of ../../../../Library/Caches/org.R-project.R/R/renv/cache/v5/macos/R-4.4/aarch64-apple-darwin20/bslib/0.9.0/70a6489cc254171fb9b4a7f130f44dca/bslib/lib/bs5/scss/_buttons.scss
         from line 233:9 of stdin

WARNING: Found no color leading to 4.5:1 contrast ratio against #799D7B...
         on line 42:5 of ../../../../Library/Caches/org.R-project.R/R/renv/cache/v5/macos/R-4.4/aarch64-apple-darwin20/bslib/0.9.0/70a6489cc254171fb9b4a7f130f44dca/bslib/sass-utils/color-contrast.scss, in function `color-contrast`
         from line 41:17 of ../../../../Library/Caches/org.R-project.R/R/renv/cache/v5/macos/R-4.4/aarch64-apple-darwin20/bslib/0.9.0/70a6489cc254171fb9b4a7f130f44dca/bslib/lib/bs5/scss/mixins/_buttons.scss, in mixin `button-outline-variant`
         from line 162:14 of ../../../../Library/Caches/org.R-project.R/R/renv/cache/v5/macos/R-4.4/aarch64-apple-darwin20/bslib/0.9.0/70a6489cc254171fb9b4a7f130f44dca/bslib/lib/bs5/scss/_buttons.scss
         from line 233:9 of stdin

WARNING: Found no color leading to 4.5:1 contrast ratio against #799D7B...
         on line 42:5 of ../../../../Library/Caches/org.R-project.R/R/renv/cache/v5/macos/R-4.4/aarch64-apple-darwin20/bslib/0.9.0/70a6489cc254171fb9b4a7f130f44dca/bslib/sass-utils/color-contrast.scss, in function `color-contrast`
         from line 44:18 of ../../../../Library/Caches/org.R-project.R/R/renv/cache/v5/macos/R-4.4/aarch64-apple-darwin20/bslib/0.9.0/70a6489cc254171fb9b4a7f130f44dca/bslib/lib/bs5/scss/mixins/_buttons.scss, in mixin `button-outline-variant`
         from line 162:14 of ../../../../Library/Caches/org.R-project.R/R/renv/cache/v5/macos/R-4.4/aarch64-apple-darwin20/bslib/0.9.0/70a6489cc254171fb9b4a7f130f44dca/bslib/lib/bs5/scss/_buttons.scss
         from line 233:9 of stdin

WARNING: Found no color leading to 4.5:1 contrast ratio against #799D7B...
         on line 42:5 of ../../../../Library/Caches/org.R-project.R/R/renv/cache/v5/macos/R-4.4/aarch64-apple-darwin20/bslib/0.9.0/70a6489cc254171fb9b4a7f130f44dca/bslib/sass-utils/color-contrast.scss, in function `color-contrast`
         from line 41:17 of ../../../../Library/Caches/org.R-project.R/R/renv/cache/v5/macos/R-4.4/aarch64-apple-darwin20/bslib/0.9.0/70a6489cc254171fb9b4a7f130f44dca/bslib/lib/bs5/scss/mixins/_buttons.scss, in mixin `button-outline-variant`
         from line 162:14 of ../../../../Library/Caches/org.R-project.R/R/renv/cache/v5/macos/R-4.4/aarch64-apple-darwin20/bslib/0.9.0/70a6489cc254171fb9b4a7f130f44dca/bslib/lib/bs5/scss/_buttons.scss
         from line 233:9 of stdin

[juliasilge]

Hmmmmm, that is interesting! Are you using the Shiny extension to run the app? Can you create a reprex (a minimal reproducible example) for your Shiny app that demonstrates the problem? I know that's a big ask for a complex task like this but it's tough to say what might be going wrong if we can't understand it. There are some details on reprexes for Shiny here. Thanks! 🙌