Same problem, fresh install, Twenty Twenty theme, no other plugins.
Problem appears to be on line 76 in DataStore.php
“SELECT name, type, locale, title, content, content_data, status, source, date_created, date_reminder, is_snoozable, layout, image FROM {$wpdb->prefix}wc_admin_notes WHERE note_id = %d LIMIT 1”,
Database table in wc_admin_notes doesn’t have layout or image column, therefore $note_row returns empty and error is thrown.
If you change line 76 to
“SELECT name, type, locale, title, content, content_data, status, source, date_created, date_reminder, is_snoozable FROM {$wpdb->prefix}wc_admin_notes WHERE note_id = %d LIMIT 1”,
Then all is well.