CheckboxGroupInput issues when accessed from webbrowser

[woec]

Hi,

I open a shiny-app installed on a dedicated shiny-server from webbrowser. In this Application I use CheckboxGroupInput to select some features of the dataset with use of choiceNames and choiceValues parameter.
This works when run the Application from within the RStudio environment, but disconnects when opened from the browser at the action which triggers the UpdateCheckboxGroupInput function.

What could be the cause for this different behavior?

Regards,
woec

shiny library is 1.4.0

[pieterjanvc]

Hi,

I most cases, when apps crash on a Shiny server but not locally, it's caused by issues that are not Shiny related. Examples are incorrect relative path names, files in incorrect folders or with wrong permissions, variables that have been assigned in RStudio locally but not on the server, ...

Could you share the error logs from the shiny server and the code so we can take a better look at it. Here's an article that might help getting the right stuff:

Shiny debugging and reprex guide

Shiny issues can be challenging to resolve relative to other problems with your code or statistical methods. Shiny apps are often large, complex projects with interacting files. When seeking help from others it is considered polite to: First, do your best to work through RStudio's debugging tools to diagnose your issue on your own. Often those shiny logs and tracebacks are useful to others trying to help out. Second, strive to minimize the effort required to replicate your issue. You can do this with a reproducible example ("reprex"). Shiny Debugging Errors in Shiny code can be difficult to track down. If you don't know where your problem is coming from, you can track it down with some o…

Thanks,
PJ