Shelly 1PM api is not responding

Hello everyone, I have a question why the api for shelly 1pm (latest firmware) does not return a result in json:
http: // ip / meters / 0 /
I'm interested in reading the current power

example monitoring & control:
http: //p-address/relay/0/
{"ison": false, "has_timer": false, "timer_started": 0, "timer_duration": 0, "timer_remaining": 0, "overpower": false, "source": "input"}

thanks, i know this command. Looks like a bug in Shelly's code.
The status command returns everything with json subarrays.

I don't understand that it doesn't work http: // ip / meters / 0