Right now, I am developing an app for my company that will allow the designers to display and read loot distribution data for our game quickly. However, it seems that Miro has cached an old version of the app and now even reads it from the wrong hosting URL. 

Uncaught TypeError: can't access property "onclick", document.getElementById(...) is null

Which is just wrong - That is the old, deprecated project. 
What happened here and can you offer any advice?

Thank you kindly,
Jovan Aleksic