using edir 8.8.3 and idm3.5.1

When we crate a workflow woth notification we get this in the ua log

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ERROR [VirtualDataAccess] Error reading SecretStore notfconfigSecret, on Object: cn=Default Notification Collection,cn=Security. Target NDS User object does not have
a SecretStore
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We didn't see this using edir 8.8.2.
The workflow works, but we don't get the notification to the user.
Can anyone explain this, or give a hint?