Users reporting White Screen of Death suddenly showing up

App has been on the Play Store for a few weeks. Users are reporting that the app was working fine but is now getting the White Screen of Death. I’m using ‘es5’ in my tsconfig.json, I’ve removed and readded android, updated npm, cordova and ionic cli, and followed the suggestion here. They say nothing has helped.

It’s odd that the app was working for them and then suddenly stopped. I can’t replicate it and don’t really know what to do next. Any ideas?