Unable to fetch app data error

Nextcloud-AIO docker container on ubuntu server 22.04
Nextcloud version 23.0.5

Hello, I started this error and I did the following.

• I enabled the app an successfully created a full restore (I assume to local storage)
• added a SMB external storage location
• attempted to change the APP data location at the bottom of the UI.
• system displayed the error "unable to fetch app data"
• the recent full restore point disappeared from my restoring points history

What I have attempted:

• I confirmed I can see the external drive location in the files location of the nextcloud GUI
• I disabled the backup app and deleted it.
• disabled the external storage app
• enabled the external storage app
• downloaded and enabled the backup app.
• the settings were maintained from before I removed the app and the error persisted

Is there a way to delete the app settings from downloading the backup app again and would that likely fix it.
here is a recent error from the log
error while running differential backup - I noticed it there multiple times

[{"file":"\/var\/www\/html\/custom_apps\/backup\/lib\/Cron\/Backup.php","line":126,"function":"runDifferentialBackup","class":"OCA\\Backup\\Cron\\Backup","object":{},"type":"->","args":[]},{"file":"\/var\/www\/html\/custom_apps\/backup\/lib\/Cron\/Backup.php","line":115,"function":"runBackup","class":"OCA\\Backup\\Cron\\Backup","object":{},"type":"->","args":[1654013082]},{"file":"\/var\/www\/html\/custom_apps\/backup\/lib\/Cron\/Backup.php","line":97,"function":"manage","class":"OCA\\Backup\\Cron\\Backup","object":{},"type":"->","args":[]},{"file":"\/var\/www\/html\/lib\/private\/BackgroundJob\/Job.php","line":51,"function":"run","class":"OCA\\Backup\\Cron\\Backup","object":{},"type":"->","args":[null]},{"file":"\/var\/www\/html\/lib\/private\/BackgroundJob\/TimedJob.php","line":58,"function":"execute","class":"OC\\BackgroundJob\\Job","object":{},"type":"->","args":[{},{}]},{"file":"\/var\/www\/html\/cron.php","line":151,"function":"execute","class":"OC\\BackgroundJob\\TimedJob","object":{},"type":"->","args":[{},{}]}]

Start with custom_apps/backup/lib/Cron/Backup.php at line 126, where runDifferentialBackup is called, and trace the scheduled path through lines 115 and 97 to /var/www/html/cron.php. Reproduce the app-data fetch failure with the SMB external storage configuration and determine what resolves both the UI error and repeated differential-backup errors.