Can anyone help?
I have developed the app on Windows and checked it is running OK on an Android device. I have now ported it over to a Macbook and installed it on iPhone 5C - and this is where my problems really begin.
When one of the providers is called on a iPhone the app closes and now importantly the developer window in Safari closes as well - so there is no trace of what is causing the error.
How can I debug this before the window closes? I can see the list of sources (see image below) but I cannot see the code which I have written.