rn-fetch-blob - idownload not working on ios for files without extension pdf

Question

Issue

download not working on iOS for files without extension with error message "protocol error" but works on android if I put a file url like this https://www.w3.org/WAI/ER/tests/xhtml/testfiles/resources/pdf/dummy.pdf it works fine.

I'm using this lib rn-fetch-blob

Please help!

React Native version

0.61.2

Library version

0.12.0

My Code

var url = "https://exmple.com/dompdf?date=" + this.state.date + "&token=" + token;
const { config, fs } = RNFetchBlob
const dirToSave = Platform.select({
    ios: fs.dirs.DocumentDir,
    android: fs.dirs.DownloadDir
});
let options = {
    fileCache: true,
    addAndroidDownloads: {
        useDownloadManager: true,
        notification: true,
        path: dirToSave + "/filename.pdf",
        description: 'PDF',
        mime: 'application/pdf',
    }
}
try {
    config(options).fetch('GET', url).then((res) => {
        console.log('download OK');
    }).catch((error) => {
        console.log(error.message);
    });
} catch (error) {
    console.log(error.message);
}