Loading of bird sample-data fails within InfluxDB v1.8.3-1/flux

[wetterfrosch]

When I try

import "experimental/csv"

csv.from(url: "https://github.com/influxdata/influxdb2-sample-data/blob/master/bird-migration-data/bird-migration.csv")

I get an "internal error", namely:
error in csv.from(): failed to read metadata: missing expected annotation datatype

Poking around, maybe something related to the hash-signs in the comment-section in the beginning of the CSV? I guess I've seen somewhere that this should be flux v0.65.1 but where how I check this again?