There is no restriction for that, you just have to do it the right way, here is how to do it.
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The error message suggests you have a coding problem, and without seeing your actual code, there is little we can do to help you. To help us help you, could you please prepare a repr oducible ex ample (reprex) illustrating your issue? Please have a look at these resources, to see how to create one for a shiny app
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…