wkh237's last Github activity was in September 2017, and he has not reacted to emails either. This repository no longer is the main location of "react-native-fetch-blob".
The owners of this fork have agreed to maintain this package:
https://github.com/joltup/rn-fetch-blob
That means issues and PRs should be posted there.
Posted by @lll000111 ("Collaborator" in this repo) on 22 March, 2018