This is an error from InfluxDB meaning the database you are trying to write to has exceeded the maximum amount of series. Here was a previous discussion about this error Max-series-per-database limit exceeded 1000000, error question - #2 by Anaisdg and some docs on too many series: https://docs.influxdata.com/influxdb/v1.8/concepts/schema_and_data_layout/#avoid-too-many-series