Page will not open containing a FileDropper

Hi all!   We are experiencing an issue with a page containing a FileDropper:   Sometimes when trying to open this page trough navigation, a progress bar appears and the page will not load. When looking at the console of the browser, an error pops up everytime we click on the navigation item. Refreshing the page seems to work.   Any ideas on what the issue might be?   Thanks.      
1 answers

By getting into the widget source repository i stumbled on this issue:

Here the maintainer of the widget finally concludes that the error could be related to the custom code around it.

So on the similar lines, do you have any custom code that might be causing issues/clashes to this widget?