AWSServices module error: region is null

Hello! I am trying to build a demo app that reads data from S3 bucket. The steps are the following:   Import AWSServices module (with dependencies, Encryption and Logging) Link AWSSernices AfterStartup microflow with the corresponding attribute in Project’s settings Add the Administration widget to the Home page   When I try to set static credentials I receive “Region must not be null error”. As you can see on the picture (see attachments) I do specify the region.   Studio Pro version is 9.4.0   UPD: Validation works fine if I set a default value for the RegionName attribute in Credentials entity.   UPD: Added another picture to show that the entity attribute does not get set.
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