Cannot read property 'initialize' of undefined (react-native))

BLE Beacons
1

Hi, i followed the instructions on react-native-proximity repo (app running on < RN v0.60). However i was stucked at this error,
Cannot read property ‘initialize’ of undefined
I’ve tried reinstall the package and link again but the problem still persists.

I tried with a blank project (running on latest react-native), the proximity observer work as expected.

Any suggestions about what i’ve missed?

2

SOLVED, linking issue, requires to add package on MainApplication.java