User Agent String:
Mozilla/5.0 (Linux; Android 7.0; SM-G892A
Build/NRD90M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0
Chrome/57.0.2987.132 Mobile Safari/537.36
…which tells me that the user is running Chrome 57 on Android (Nougat)
on a Samsung SM-G892A
The actual error is coming back from window.onError with
Uncaught ReferenceError: androidInterface is not defined
Also I track clicks and api calls. This error occurs right as they are loading the page which is just a standard backbone/require setup that is working for a few thousand other customers.
Have you ever seen anything like this? What does it even mean?
If you look closely at the UA string, you’ll see
wv which means it’s a WebView on Android.
Bottom line is that you don’t have to change anything because the error is related to the app that implemented the WebView.
Try running a search over your node_modules folder to see if you can find a reference to androidInterface. If you’re using third party libraries, it’s possible that the reference can be found here.