I've been encountering occasional errors with a really simple python program to write batches of points. I thought my usage was more-or-less very basic, so I'm not clear why this is happening. Perhaps the batching machinery is improperly creating empty batches and dropping points?

I get many log messages like the following:

The batch item wasn't processed successfully because: (400)
Reason: Bad Request
HTTP response headers: HTTPHeaderDict({'Date': 'Sat, 11 Apr 2020 23:14:18 GMT', 'Content-Type': 'application/json; charset=utf-8', 'Content-Length': '54', 'Connection': 'keep-alive', 'Strict-Transport-Security': 'max-age=15724800; includeSubDomains', 'x-platform-error-code': 'invalid'})
HTTP response body: {"code":"invalid","message":"writing requires points"}

Observe how the chronograf.csv data is missing some values like (0, 9, 27, 30, 36, etc).

I've attached some sample code, sample local output, and a sample CSV exported from InfluxDB explorer UI.
Also attached in this Gist for nice formatting.

SampleCode.py.txt
LocalOutput.txt
2020-04-11-16-47_chronograf_data.csv.txt

Configuration Info:

InfluxDB version: InfluxDB Cloud 2.0
influxdb_client python module version: 1.5.0
Python version: 3.7.3
OS: Raspbian Linux (Buster)