Regarding the issue you’ve encountered, to allow our technical team to further analyze your system logs and provide accurate assistance, we recommend that you open a support ticket via our official service portal.
I understand my error during backup job setup: I selected a specific bucket along with bucket sub-folders using the following notation: “my-bucket\my-bucket-subfolder”
Therefore the application raised a generic error. It was my fault at last, so no service ticket is required.