Cannot use copyFileAssets to copy file from android assets folder

RN: 0.43.3
RNFS: 2.5.1

I am trying to copy file from android assets folder into android document directory path.

1. I test the file's existence using `RNFS.existsAssets('stickers/test.txt').then((result) => console.log(result));`. The result is `true`
2. I copy the textfile into DocumentDirectoryPath using `RNFS.copyFileAssets('stickers/test.txt', RNFS.DocumentDirectoryPath)
.then((result) => console.log(result))
.catch((error) => console.log(error));`. It shows

> { [Error: ENOENT: no such file or directory, open 'stickers/test.txt'] framesToPop: 1, code: 'ENOENT' }

Expected behavior: Since existsAssets returned TRUE, the file should be copied successfully into new directory instead of returning file not found