'__date' returns None in MySQL while it returns date object in Sqlite3

[pikicode]

database: mysql 5.7
django version: 3.2
python version: 3.8.1

Model.objects.values('some_datetime_field__date',) returns None in MYSQL

class Inbound(models.Model):
    effective_date = models.DateTimeField(null=False, blank=True)
    number = models.IntegerField()
    # other fields.

daily_changes = Inbound.objects.all().values('effective_date__date')\
  .annotate(total_change=Sum('number')).
Inbound.objects.values('effective_date__date')

The code just returns Nones in Mysql. But it returns date object with Sqlite

[Mariusz Felisiak]

When USE_TZ is True, fields are converted to the current time zone before filtering (see ​__date docs). This requires ​time zone definitions in the database. Please check that mysql_tzinfo_to_sql is loaded to the time zone tables.