Siri can't find my Contacts on macOS Catalina
Since a few days now, each time I ask Siri on my iMac using macOS Catalina to call someone from my Contacts (using my nearby iPhone), Siri tells me that she can't find the requested contact.
If I open up my Contacts application, not only do I see all my contacts there, but I can also call one of them from his or her contact information.
I've unchecked and checked the Contacts in the System Preferences (under Apple ID/iCloud), but it seems to have no effect on Siri's behaviour.
Why is Siri still unable to see the contacts even though they are there, and how can I resolve the issue?
Thanks!
iMac 27″, macOS 10.15