Unable to connect to RShiny

Hi, I have successfully installed RShiny. But when I type http://ipaddress:3838, I am continuously hitting the error:
ERROR: cannot open the connection.
Please can you help resolve this for me at your earliest convenience. It’s a bit urgent please. Thanks in advance!

Hi debu, I don't think we have enough information to help you.

The cannot open the connection frequently means you have some code that is trying to open a file, but is unable to because the appropriate file path is not provided.

The shiny team put together the following guides to help debug your shiny app here: Debugging Shiny applications.

In order to efficiently get help in a forum like this, it's useful to package your question as a reproducible example (reprex). Here's a handy guide with tips to ask a shiny reprex: Shiny debugging and reprex guide