Upload Storage File: Operation returned an invalid status code 'Forbidden'

Hi. I have used default Folder . In that, I created a Storage Bucket named “InvoiceBucket”. But when I run Upload Storage File activity, I get the following error with no further details:

Upload Storage File: Operation returned an invalid status code ‘Forbidden’

I put these data for Upload Storage File activity’s fields:

Path:
“C:\rpa\EPA\EPAFolder\501103615.pdf”

Orchestrator Folder Path:
“Default”

Destination:
“\501103615.pdf”

Storage Bucket Name:
“InvoiceBucket”

What is the cause of the error?

Please help.