I got the same error:
Error in curl::curl_fetch_memory(url, handle = handle) :
Timeout was reached: [api.shinyapps.io] Operation timed out after 10001 milliseconds with 0 out of 0 bytes received
Calls: <Anonymous> ... tryCatch -> tryCatchList -> tryCatchOne -> <Anonymous>
Timing stopped at: 0.01 0.02 10
Have you got any solution for that? 