Backup failing after years of working

[AdamEsterle]

Backup has been running on my Laravel 5.4 fine, everyday, for 2+ years. Not sure why this is happening all of a sudden

php artisan backup:run
Starting backup...
Dumping database splitum...
Determining files to backup...
Zipping 2560 files...
Created zip containing 2560 files. Size is 86.66 MB
Copying zip to disk named s3...
Copying zip failed because: Error executing "ListObjects" on "https://splitum.s3.us-east-2.amazonaws.com/?prefix=Splitum%2F2020-10-05-19-15-39.zip%2F&max-keys=1&encoding-type=url"; AWS HTTP error: count(): Parameter must be an array or an object that implements Countable.
Backup failed because Error executing "ListObjects" on "https://splitum.s3.us-east-2.amazonaws.com/?prefix=Splitum%2F&encoding-type=url"; AWS HTTP error: count(): Parameter must be an array or an object that implements Countable.