Component used: Paging
Version used: 3.0.0-alpha01

I have followed codelabs paging 3 tutorial. I have implemented paging from network and database.
This is the repository provided by codelabs tutorial :- https://github.com/googlecodelabs/android-paging

I have founded 2 issues in Paging 3.

1. Application get crashed when Recylerview reach at end(last page).
Inside GithubRemoteMediator.kt
I have set val endOfPaginationReached = page > 2 to allow maximum 2 pages for testing.
So, the problem is when I reach at the last page of list, application get crashed as remoteKeys.nextKey is null(as we have set nextKey=null for last page of list).

2. Offline cache broken
How to support caching when application is open without internet connection. currently it is showing retry button. How to show previously loaded data. I have tried to fix this by removing

// clear all tables in the database
if (loadType == LoadType.REFRESH) {
repoDatabase.remoteKeysDao().clearRemoteKeys()
repoDatabase.reposDao().clearRepos()
}

as this will now not gone delete data from database.
But still Pager does not load data available.

So how I can fix this problem?
Is there any way of detecting end of paging?
Why Pager is not returning data available in database.