Native Modules in Jitsi

I have cloned jitsi-meet & created a NATIVE MODULE, registered that module inside a package and that package has to be registered inside MainApplication class with “ProductList”.
But It’s showing an error that the
PackageList cannot find symbol
While returning the List, tried avoiding the use of PackageList and returned using Array.asList. Even after that the Module imported in JS shows it NULL.

1. Can we use any way-around and skip using PackageList or it’s used by React-Native ?
2. If it’s mandatory to use PackageList then it’s not showing up. Creating a local version of ProductList is acceptable?
3. If we can use the way around and use PackageList, what possible reason is there as imported module is showing NULL .