This is a companion discussion topic for the original entry at https://www.rstudio.com/blog/shiny-server-pro-1-5-6
Shiny Server 1.5.6.875 and Shiny Server Pro 1.5.6.902 are now available.
This release of Shiny Server Pro includes floating license support and Shiny Server contains a small enhancement to the way errors are displayed. We recommend upgrading at your earliest convenience.
Shiny Server 1.5.6.875 Use HTTPS for Google Fonts on error page, which resolves insecure content errors on some browser when run behind SSL. (PR #322) Shiny Server Pro 1.