InfluxDB error on node-red

I would like to put my TTN data via node-red on influxDB to use Grafana eventually. However I can't configure node-red-contrib-influxdb in the feed:

I get the following error messages:
[error] [influxdb out:5fb00ab2a8cc7560] Error: A 401 Unauthorized error occurred: {"code":"unauthorized","message":"Unauthorized"}
or sometimes when I change the configuration :
"HttpError: unauthorized access"

Thank you for your answers

I see you are using InfluxDB v2. Did you create a user token in InfluxDB and enter it in the node configuration?

Thank you very much, it worked!!
I am new in this field, I did not know how to proceed

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