upload files in the app doesn't work....

[bangs5282]

(I'm sorry my English skills are not good.)
I looked at the example and made the code exactly as it was. But it doesn't work.

let result = await DocumentPicker.getDocumentAsync({
type:'*/*',
copyToCacheDirectory: false,
});

//const uri = FileSystem.documentDirectory+result.assets[0].name;
setSrc(result.assets[0].uri);

I think setSrc(result.assets[0].uri); is not correct.
What should I do?
(uri returns content://com.android.externalstorage.documents/document/primary%3ADownload%2Ffailing-forward%20(1).epub)

thank you for your response.