This is not the source of my error (similar to the situation here), but I'm getting a confusing timedatectl error on shinyapps:
2020-10-08T13:06:52.961027+00:00 shinyapps[2184561]: Warning in system("timedatectl", intern = TRUE) :
2020-10-08T13:06:52.961028+00:00 shinyapps[2184561]: running command 'timedatectl' had status 1
I believe this is related to this issue I had a while back with Rstudio Server, and might be something you can fix in the server setup to get rid of this particular source of confusion.