The past week or so (maybe since January 1?) I have a persistent notification for a new souvenir.  I can view my souvenirs, it goes away, but within half an hour, it's back.  I look at them again, the notification goes away, and then returns.  The last souvenir I earned is the one for Jan 1.  I've restarted the app, and the phone, and the behavior remains.   Android v. 9 App v. 7.2.0 Google Pixel   How can I clear this?