title: R/exams Problem deploying app to shinyapps.io
body: <p>I have developed a shiny app in which I use the function exams2blackboard from the R/exams package. I installed the package from <a href="http://R-Forge.R-project.org" rel="nofollow noreferrer">http://R-Forge.R-project.org</a>. When I go to publish it on shinyApps.io I receive the following error:</p>
  <blockquote>
  <p>Error: Unhandled Exception: Child Task 980776811 failed: Error building image: Error fetching exams (2.4-0) source.  unable to satisfy package: exams (2.4-0)</p>
  </blockquote>
  <p>Note: I used the R/exams version 2.4-0 from <a href="http://R-Forge.R-project.org" rel="nofollow noreferrer">http://R-Forge.R-project.org</a> following the recommendation at <a href="https://stackoverflow.com/questions/65232218/blackboard-not-importing-blackboard-zip">Blackboard not importing Blackboard.zip</a></p>