Can read out all values but one from tuya smart socket

[Ty6600]

Hi,

I use iobroker to read out some tuya smart wifi sockets. However, i'm a bit confused. If in iobroker i try to read out values from my wifi socket this works flawlessly except for id 19.
For example:
Reading id 18 out works perfectly:

But id 19 gives datapoint not found (i just changed 18 to 19 in the url)

Hereunder you can see my iobroker overview of the object.

Thank you very much for your assistance