I get that as well.
If I artificially add a 1 second delay I dont get anymore
Okay the 60 calls per minute limit can be avoided as follows:
On server
cd /var/discourse
Open containers/app.yml in editor (I use vi), add following line to env section
DISCOURSE_MAX_ADMIN_API_REQS_PER_KEY_PER_MINUTE : 6000
and save
Rebuild (just restart won’t have any effect)
./launcher rebuild app