Hi Franky1,
Is this the output you want to see? Not sure if I am using journalctl correctly.
user@ubuntu-20:~$ journalctl -f -u telegraf.service
Hint: You are currently not seeing messages from other users and the system.
Users in groups 'adm', 'systemd-journal' can see all messages.
Pass -q to turn off this notice.
-- Logs begin at Wed 2020-10-14 11:54:18 EDT. --
2021-12-06T14:12:48Z E! Output [wavefront] unexpected type: string, with value: 92 days, 20:30, for: system.uptime.format
2021-12-06T14:12:48Z E! Output [wavefront] unexpected type: string, with value: 92 days, 20:35, for: system.uptime.format
2021-12-06T14:12:48Z E! Output [wavefront] unexpected type: string, with value: 92 days, 20:40, for: system.uptime.format
2021-12-06T14:12:48Z E! Output [wavefront] unexpected type: string, with value: 92 days, 20:45, for: system.uptime.format
2021-12-06T14:12:48Z E! Output [wavefront] unexpected type: string, with value: 92 days, 20:50, for: system.uptime.format
2021-12-06T14:12:48Z E! Output [wavefront] unexpected type: string, with value: 92 days, 20:55, for: system.uptime.format
2021-12-06T14:12:48Z E! Output [wavefront] unexpected type: string, with value: 92 days, 21:00, for: system.uptime.format
2021-12-06T14:12:48Z E! Output [wavefront] unexpected type: string, with value: 92 days, 21:05, for: system.uptime.format
2021-12-06T14:12:48Z E! Output [wavefront] unexpected type: string, with value: 92 days, 21:10, for: system.uptime.format
2021-12-06T14:12:48Z E! Output [wavefront] unexpected type: string, with value: 92 days, 21:15, for: system.uptime.format
2021-12-06T14:12:48Z E! Output [wavefront] unexpected type: string, with value: 92 days, 21:20, for: system.uptime.format
2021-12-06T14:12:48Z E! Output [wavefront] unexpected type: string, with value: 92 days, 21:25, for: system.uptime.format
2021-12-06T14:12:48Z E! Output [wavefront] unexpected type: string, with value: 92 days, 21:30, for: system.uptime.format
2021-12-06T14:12:48Z E! Output [wavefront] unexpected type: string, with value: 92 days, 21:35, for: system.uptime.format
2021-12-06T14:12:48Z E! Output [wavefront] unexpected type: string, with value: 92 days, 21:40, for: system.uptime.format
2021-12-06T14:12:48Z E! Output [wavefront] unexpected type: string, with value: 92 days, 21:45, for: system.uptime.format
2021-12-06T14:12:48Z E! Output [wavefront] unexpected type: string, with value: 92 days, 21:50, for: system.uptime.format
2021-12-06T14:12:48Z E! Output [wavefront] unexpected type: string, with value: 92 days, 21:55, for: system.uptime.format
2021-12-06T14:12:48Z E! Output [wavefront] unexpected type: string, with value: 92 days, 22:00, for: system.uptime.format
2021-12-06T14:12:48Z E! [agent] Error writing to outputs.http: when writing to [https://10.229.42.57/arc/default/metric] received status code: 400
2021-12-06T14:13:02Z E! Output [wavefront] unexpected type: string, with value: 93 days, 5:00, for: system.uptime.format
