Using RNFetchBlob.fs.cp with uri got from react-native-document-picker causeing error

input = context.getContentResolver().openInputStream(uri);
/* save stream to temp file */
/* displayName is obtained from the URI */
File file = new File(context.getCacheDir(), displayName);
OutputStream output = new FileOutputStream(file);
byte[] buffer = new byte[4 * 1024]; // or other buffer size
int read;

while ((read = input.read(buffer)) != -1) {
  output.write(buffer, 0, read);
}
output.flush();

final String outputPath = file.getAbsolutePath();
return outputPath;

  try {
    const res = await DocumentPicker.pick({
      type: [DocumentPicker.types. allFiles],
    });

    console.log(
      res
    );
  } catch (err) {
    if (DocumentPicker.isCancel(err)) {
      // User cancelled the picker, exit any dialogs or menus and move on
    } else {
      throw err;
    }
  }
}````