Getting 422 for Time Gen-1

Until now API was working fine but I'm getting 422 errors unnecessarily, is this a limit issue?
We are internal team at Microsoft trying to utilize timegen-1, and we keep running into unknown issues

> nixtla_validate_api_key()
[1] TRUE
> df <- nixtlar::electricity
> head(df)
  unique_id                  ds     y
1        BE 2016-10-22 00:00:00 70.00
2        BE 2016-10-22 01:00:00 37.10
3        BE 2016-10-22 02:00:00 37.10
4        BE 2016-10-22 03:00:00 44.75
5        BE 2016-10-22 04:00:00 37.10
6        BE 2016-10-22 05:00:00 35.61
> nixtla_client_fcst <- nixtla_client_forecast(df, h = 8, level = c(80,95))
Frequency chosen: h
Error in `httr2::req_perform()`:
! HTTP 422 Unprocessable Entity.
Run `rlang::last_trace()` to see where the err