TypeError: Cannot read property 'connect' of null

[WANDIKAPRATAMA]

Hi, can you give me a solution to the problem I am facing, currently when I try to connect with RNSimpleOpenvpn.connect I always get the error message [TypeError: Cannot read property 'connect' of null], without knowing what and from If the error message works, I really appreciate any reply you can give to help me solve this problem.

I think I have followed all the procedures attached to this documentation, I also used files from react-native-simple-openvpn/example
/App.js
, in the context of the debugging process to compare the projects I created