Android 9 Error: mkdir failed to create some or all directories in '/storage/emulated/0/

Any time i type the Error below, I get an error : Error: mkdir failed to create some or all directories in '/storage/emulated/0/

RNFetchBlob.fs.mkdir( RNFetchBlob.fs.dirs.SDCardDir + '/myDownloader', );

“rn-fetch-blob”: “^0.12.0”, “react-native”: “0.62.2”,

PLEASE HELP

[PedroTrogo]

try to add requestLegacyExternalStorage in AndroidManifest

<manifest ... >
<!-- This attribute is "false" by default on apps targeting
     Android 10 or higher. -->
  <application android:requestLegacyExternalStorage="true" ... >
    ...
  </application>
</manifest>

[Malik-Usman17]

Still facing this issue can’t create the directory on my device.