Debug /my.app/www/undefined in ios?!

Ionic Framework ionic-v3
1

hi. i stuck at the spinner at the splashscreen with my ios build. safari tells me

file:///Users/me/Library/Developer/CoreSimulator/Devices/8E60C6CF-B2AF-4CB1-B6AE-A109C5FB3C1E/data/Containers/Bundle/Application/16765937-E07E-4925-85E9-5ADE26FA0820/my.app/www/undefined

how to debug something like this?

2

ok, seems not to be the issue why i am stucking at loading screen. the orignal i forked from is doing the same undefined but proceeds.