By default, plugins use key prefix "uwsgi" and this should be reflected in the documentation.
Generated template (--zabbix-template) uses key names without a prefix and it does not work.
Example:
<key>core.busy_workers</key>
It should be:
<key>prefix.core.busy_workers</key>
Conveniently it would also display the name of the instance in the field name.
<key>core.busy_workers</key>
It should be:<key>prefix.core.busy_workers</key>
Conveniently it would also display the name of the instance in the field name.