I’m getting the same, although I don’t recall generating for this year and yet it shows recent activity in the graphs. Has it been made to auto-generate?
it seems to have gone through when I tried earlier, when I look at https://www.inaturalist.org/stats/2020/alexis_orion it says “Stats generated on March 08, 2020 08:31 am” which is exactly when I last tried earlier.
We don’t update or maintain the Year in Review pages throughout the year, it’s just a year-end thing. I was just able to generate my states for last year and this year, though. https://www.inaturalist.org/stats/2020/tiwane