Shiny app disconnects only on server--logs show no errors

[winston]

It's possible that the problem is due to a problem in rhandsontable, or an interaction between rhandsontable and shinyapps.io, but it's hard to tell which without I know it's not easy to do so with this particular application, but it would really help to have a reproducible example. That would let us get in there with a debugger and figure out what's going on.

Here's information about how to do that:

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…

If you're familiar with debugging JavaScript in the browser, you could put a breakpoint at rhandsontable.js:215, and when it gets there, see if there are any weird values that are being passed to onInputChange.

Other possibilities include updating your version of rhandsontable.

One more question: do you have a reliable internet connection?