Catalina Contacts app completely blank

Running Catalina 10.15.7 on a mid 2013 Mac Air. When I open the Contacts app, it seems to open ok except that there is no content in any of the three columns. The search box and 'add contact' (plus sign) button are there, but that's it. When I open preferences, all my accounts and their settings are listed correctly. Contacts all show up fine in my iCloud (through browser) and iPhone Contacts app. I reinstalled Catalina just this morning. Everything else seems to be working normally. How can I make Contacts love me again? Thanks!