Diablo 3 China Era 11 and 12 Leaderboards missing

I am trying to get era 11 and the current era 12 Diablo 3 leaderboard data from China.

If I use this link (with a correct access token entered at the end), I can get the dera 10 data (and for that matter era 1-10 by changing the entry after “era/”).


If I simply change the era number link to “11” or “12” (i.e changing it from era 11 to era 12),


I get an error message. Any help would be appreciated.