I am seeing this stack trace in Crashlytics:

Fatal Exception: java.lang.SecurityException: Unsupported path /storage/emulated/0/Download
   at android.os.Parcel.createExceptionOrNull(Parcel.java:3023)
   at android.os.Parcel.createException(Parcel.java:3007)
   at android.os.Parcel.readException(Parcel.java:2990)
   at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:190)
   at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:142)
   at android.content.ContentProviderProxy.insert(ContentProviderNative.java:557)
   at android.content.ContentResolver.insert(ContentResolver.java:2200)
   at android.content.ContentResolver.insert(ContentResolver.java:2162)
   at android.app.DownloadManager.enqueue(DownloadManager.java:1582)

However, we are setting up the download like this:

 val request = DownloadManager.Request(Uri.parse(downloadUrl))
            .apply {
                setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, downloadFilename)
                // ...
            }

and, according to the docs of setDestinationInExternalPublicDir no permission should be required.

Furthermore, I am getting crash reports from all kinds of different devices and on all recent Android versions – but I cannot reproduce it on any of my test devices, even though some are the exact same model/OS version combination that I also see in Crashlytics.

Is there any user setting that could be causing the trouble here?