I have deployed a shiny app on shinyapps.io that analyses data from MySQL database. The applications uses the "pool" package and "dbpool" connection string to connect to the MySQL database. The application works very fine on my local computer. However, after uploading to shinyapps.io, the displayed url only shows the message "ERROR: An error has occurred. Check your logs or contact the app author for clarification."
Please could anybody help me with why the application runs fine on my local computer, but I get this error when I try to deploy it. Thanks in advance.