Problem with missing themes

[MLK97]

Hello,

I installed shinystan on two machines (Windows, Linux) and in both cases when trying out shinystan via launch_shinystan_demo() I get the error

⚠️ Warning: Error in shinythemes::shinytheme: flatly is not an available theme. Valid themes are: .
82: stop
81: shinythemes::shinytheme

So far I have reinstalled shinystan a couple of times. I also installed and included shinythemes and shinyjs as well as shiny all manually to see if something went wrong there but the problem keeps popping up.

I don't know if I have to install something additonally on my local system. It seems also that noone has encountered that same warning message, yet.

[jgabry]

Thanks for reporting this! I'm on a Mac and everything seems to be working ok, so maybe this is an issue only on Windows and Linux. @VeenDuco if you have a moment could you see if you are able to reproduce this error on your computer?

[jgabry]

@MLK97 Can you try installing shinystan from a branch I just made (without the flatly theme) and see if that works? You can do

devtools::install_github("stan-dev/shinystan", ref = "no-flatly-theme")

and then try loading shinystan and checking launch_shinystan_demo(). Thanks!

[MLK97]

Sorry for the late reply @jgabry
This actually did the trick and it works now.
Only getting a deprecated warning but that is not a big problem

Listening on http://127.0.0.1:7210
The name provided ('refresh') is deprecated in Font Awesome 5:

• please consider using 'sync' or 'fas fa-sync' instead
• use the verify_fa = FALSE to deactivate these messages
  The name provided ('refresh') is deprecated in Font Awesome 5:
• please consider using 'sync' or 'fas fa-sync' instead
• use the verify_fa = FALSE to deactivate these messages

Thank you for helping and solving it that fast.
Hope this also helps someone else.

[jgabry]

Glad that works!

[jgabry]

Also, I'm going to keep this open until I can get a release out that fixes this. Thanks again for reporting it.

[MLK97]

@klamb011 have you tried @jgabry's workaround?

@MLK97 Can you try installing shinystan from a branch I just made (without the flatly
theme) and see if that works? You can do

devtools::install_github("stan-dev/shinystan", ref = "no-flatly-theme")

and then try loading shinystan and checking launch_shinystan_demo(). Thanks!

[klamb011]

@MLK97
Alright. I did that and it opened what appears to be another window with what I am assuming is the shiny app. That worked just fine. But I try running my code and it still says that the theme is not available.

[jgabry]

Hmm, that's strange. I wonder if you need a fresh R session. If you start a fresh R session, run the installation code above, and then try launching shinystan with your model does it work?

[klamb011]

I ended up fixing it myself. Apparently, I needed an older version of RStudio, specifically 1.3.1096 instead of the most recent version. So if anyone else runs into this issue, there you go!!

[jgabry]

Thanks for the update. Strange that the latest RStudio doesn't work. I'll see if I can figure out why.

[lgondara]

I was having the same issue, but for another shiny app. Issue seems to be with shinythemes package and the new R Studio. Replacing shinythemes by bslib seems to resolve the issue. i.e. instead of shinythemes::shinytheme("theme_name"), use bslib::bs_theme(bootswatch = "theme_name" ). It also states on shinythemes repo that it has been superseded by the {bslib} package. Hope it helps.

[jgabry]

Thanks @lgondara! That helps a lot. I'll look into bslib::bs_theme.