Paging library is not sending any data to my PagedListAdapter

I had the same problem but I accidentally added-

RecyclerView.setHasFixedSize(true);

After removing this, It worked.

I had to set the adapter. recyclerView.setAdapter(adapter);

Problem found: I forgot to set layout manager!

Same issue I had and I just removed RecyclerView.setHasFixedSize(true) then it started working fine.