Question Empty telemetry files

[Ideler IT-Service]

Server operating system version

Ubuntu 18.04.6 LTS

Plesk version and microupdate number

18.0.46

Hello,
I'm trying to identify the bottlenecks in the backup and have installed the telemetry extension for this purpose. However, in the overview of the backups, no icon is enabled next to the entries. Then I looked on the file system and saw that the file with the telemetry data all have the same size and consists only of zeros. Are we missing another dependency or have we configured something wrong?

Greetings
Nick