Influx 2.0: "Failed to start nats streaming server"

Hello,
after upgrading or installing Influxdb 2.0 on my debian x64 computer the “influxd” command give me this error:

2020-11-17T15:45:31.428850Z	error	Failed to start nats streaming server	{"log_id": "0QXiyER0000", "error": "nats: no servers available for connection"}
Error: nats: no servers available for connection

Any idea ? Thanks.