Issue with backup. Contacts and SMS not backed up.

[soplaris]

Hello,
I'm trying to back up my Samsung A21S with this script. I got everything started but encountered problems while backing up.
Here is the command-line output (german):

Exporting contacts (as vCard), call logs as well as SMS messages (as CSV).
adb: error: failed to stat remote object '/storage/emulated/0/open-android-backup-temp/.': No such file or directory
Errors occurred while backing up . - this file (or multiple files) might've been ignored.
mv: der Aufruf von stat für './backup-tmp/open-android-backup-temp/open-android-backup-contact*.vcf' ist nicht möglich: Datei oder Verzeichnis nicht gefunden
No contacts found on device - ignoring.
mv: der Aufruf von stat für './backup-tmp/open-android-backup-temp/SMS_Messages.csv' ist nicht möglich: Datei oder Verzeichnis nicht gefunden

Maybe someone can tell me how it will work. Doesn't seem to be a great problem, as I expect.

Thanks

[mrrfv]

Before this error occurs, the script asks you to press a button on your device to start exporting contacts and other data. Could you please make sure you've done that?

[soplaris]

I've done that as far as I can remember, but after the app for that purpose installs nothing is done. Only the permissions can be set and I have set them.

[luisseyfer]

Same here:

Starting: Intent { cmp=mrrfv.backup.companion/.MainActivity }
The companion app has been opened on your device. Please press the 'Export Data' button - this will export contacts/messages to internal storage, allowing this script to back them up. When this is complete, press Enter to continue.

Attempting to uninstall companion app.
Exporting apps.
Backing up app: com.sony.playmemories.mobile (1/61)
/data/app/~~IKvpP13iVrBXrAVEf9jssA==/com.sony.playmemories.mobile-YcJzvMKk8OUQqJ...IOApqQ==/base.apk: 1 file pulled, 0 skipped. 24.5 MB/s (8315945 bytes in 0.323s)
/data/app/~~IKvpP13iVrBXrAVEf9jssA==/com.sony.playmemories.mobile-YcJzvMKk8OUQqJ...fig.arm64_v8a.apk: 1 file pulled, 0 skipped. 25.5 MB/s (8004155 bytes in 0.299s)
/data/app/~~IKvpP13iVrBXrAVEf9jssA==/com.sony.playmemories.mobile-YcJzvMKk8OUQqJ...plit_config.de.apk: 1 file pulled, 0 skipped. 14.0 MB/s (164249 bytes in 0.011s)
/data/app/~~IKvpP13iVrBXrAVEf9jssA==/com.sony.playmemories.mobile-YcJzvMKk8OUQqJ..._config.xhdpi.apk: 1 file pulled, 0 skipped. 20.5 MB/s (2380667 bytes in 0.111s)
Backing up app: com.netiq.oathtoken (2/61)

...

Backing up app: guide.whitewater (61/61)
/data/app/~~WQ38CJ5SFfLdslaGS94wrA==/guide.whitewater-tT9qmp9noCPpkZZbi-oQKA==/base.apk: 1 file pulled, 0 skipped. 25.5 MB/s (13277241 bytes in 0.498s)
/data/app/~~WQ38CJ5SFfLdslaGS94wrA==/guide.whitewater-tT9qmp9noCPpkZZbi-oQKA==/s...ig.arm64_v8a.apk: 1 file pulled, 0 skipped. 25.0 MB/s (25179162 bytes in 0.961s)
/data/app/~~WQ38CJ5SFfLdslaGS94wrA==/guide.whitewater-tT9qmp9noCPpkZZbi-oQKA==/split_config.de.apk: 1 file pulled, 0 skipped. 7.1 MB/s (33177 bytes in 0.004s)
/data/app/~~WQ38CJ5SFfLdslaGS94wrA==/guide.whitewater-tT9qmp9noCPpkZZbi-oQKA==/s...t_config.xhdpi.apk: 1 file pulled, 0 skipped. 12.7 MB/s (127312 bytes in 0.010s)
Exporting contacts (as vCard), call logs as well as SMS messages (as CSV).
adb: error: failed to stat remote object '/storage/emulated/0/open-android-backup-temp/.': No such file or directory
Errors occurred while backing up . - this file (or multiple files) might've been ignored.
mv: cannot stat './backup-tmp/open-android-backup-temp/open-android-backup-contact*.vcf': No such file or directory
No contacts found on device - ignoring.
mv: cannot stat './backup-tmp/open-android-backup-temp/SMS_Messages.csv': No such file or directory

Before this error occurs, the script asks you to press a button on your device to start exporting contacts and other data. Could you please make sure you've done that?

I did!

I tried tar and adb both.

Device: Ulefone Armor x10 Pro
PC: Kubuntu 24.04.