"The stream does not support concurrent IO read or write operations"

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1

My problem:
On a brand new install of Duplicati Beta (2.0.7.1) on Windows 10, I setup a new backup. The backup location is a Scaleway (s3-like) bucket. The connections works fine.
When I attempt to sync, it fails with this error:

System.AggregateException: One or more errors occurred.
---> System.AggregateException: The stream does not support concurrent IO read or write operations.
---> System.NotSupportedException: The stream does not support concurrent IO read or write operations.
...

Reading the links below I changed s3-ext-signatureversion but this didn’t fix the problem.

Probably related:

2

This problem got solved by following Backup Duplicati to scaleway.com and adding the setting s3-ext-authenticationregion=fr-par

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