No data on dashboard

[JackoAC]

Hello,
I've started recently to use telegraf and grafana.
I've followed your instruction but i dont have any data on my dashboard.
My datasource on grafana is working but i can't get metrics from telegraf and speedtest.

'telegraf@Grafana:/root$ tail /var/log/telegraf/agent_speedtest.log
2023-07-28T09:15:49Z E! [telegraf] Error running agent: input plugins recorded 1 errors
2023-07-28T09:15:59Z D! [outputs.influxdb] Buffer fullness: 0 / 10000 metrics
2023-07-28T09:16:09Z D! [outputs.influxdb] Buffer fullness: 0 / 10000 metrics
2023-07-28T09:16:19Z D! [outputs.influxdb] Buffer fullness: 0 / 10000 metrics
2023-07-28T09:16:29Z D! [outputs.influxdb] Buffer fullness: 0 / 10000 metrics
2023-07-28T09:16:39Z D! [outputs.influxdb] Buffer fullness: 0 / 10000 metrics
2023-07-28T09:16:49Z D! [outputs.influxdb] Buffer fullness: 0 / 10000 metrics
2023-07-28T09:16:59Z D! [outputs.influxdb] Buffer fullness: 0 / 10000 metrics
2023-07-28T09:17:09Z D! [outputs.influxdb] Buffer fullness: 0 / 10000 metrics
2023-07-28T09:17:19Z D! [outputs.influxdb] Buffer fullness: 0 / 10000 metrics
'

Could you help me ?
Thank in advance !

[JackoAC]

Well i needed to run the speedtest, then this command, telegraf --config /etc/telegraf/telegraf.conf --once
Now it work