WARNING: naive datetime

[spch-GL]

Lors de la génération des graphiques ou du rapport, il y a maintenant ces warnings qui apparaissent et je trouve cela bizarre car je pense qu'on écrit pas dans la base à ce moment...
exemple:

2021-11-18T09:39:59     WARNING    warning:C:\apps\OSGeo4W\apps\Python39\lib\site-packages\django\db\models\fields\__init__.py:1358: RuntimeWarning:
             
             DateTimeField CountDetail.timestamp received a naive datetime (2020-06-22 00:00:00) while time zone support is active.
             
             
             traceback: File "", line 2, in 
              File "C:\Users/GrelletP/AppData/Roaming/QGIS/QGIS3\profiles\cptg_dev/python/plugins\comptages\comptages.py", line 544, in do_generate_chart_action
              self.chart_dock.set_attributes(count)
              File "C:\Users/GrelletP/AppData/Roaming/QGIS/QGIS3\profiles\cptg_dev/python/plugins\comptages\chart\chart_dialog.py", line 59, in set_attributes
              self._populate_tab(tab, section, count, approval_process)
              File "C:\Users/GrelletP/AppData/Roaming/QGIS/QGIS3\profiles\cptg_dev/python/plugins\comptages\chart\chart_dialog.py", line 109, in _populate_tab
              ChartTime(
              File "C:\Users/GrelletP/AppData/Roaming/QGIS/QGIS3\profiles\cptg_dev/python/plugins\comptages\chart\chart_dialog.py", line 317, in get_div
              df = statistics.get_time_data(
              File "C:\Users/GrelletP/AppData/Roaming/QGIS/QGIS3\profiles\cptg_dev/python/plugins\comptages\core\statistics.py", line 22, in get_time_data
              qs = models.CountDetail.objects.filter(
              File "C:\apps\OSGeo4W\apps\Python39\lib\site-packages\django\db\models\manager.py", line 85, in manager_method
              return getattr(self.get_queryset(), name)(*args, **kwargs)
              File "C:\apps\OSGeo4W\apps\Python39\lib\site-packages\django\db\models\query.py", line 941, in filter
              return self._filter_or_exclude(False, args, kwargs)
              File "C:\apps\OSGeo4W\apps\Python39\lib\site-packages\django\db\models\query.py", line 961, in _filter_or_exclude
              clone._filter_or_exclude_inplace(negate, args, kwargs)
              File "C:\apps\OSGeo4W\apps\Python39\lib\site-packages\django\db\models\query.py", line 968, in _filter_or_exclude_inplace
              self._query.add_q(Q(*args, **kwargs))
              File "C:\apps\OSGeo4W\apps\Python39\lib\site-packages\django\db\models\sql\query.py", line 1393, in add_q
              clause, _ = self._add_q(q_object, self.used_aliases)
              File "C:\apps\OSGeo4W\apps\Python39\lib\site-packages\django\db\models\sql\query.py", line 1412, in _add_q
              child_clause, needed_inner = self.build_filter(
              File "C:\apps\OSGeo4W\apps\Python39\lib\site-packages\django\db\models\sql\query.py", line 1347, in build_filter
              condition = self.build_lookup(lookups, col, value)
              File "C:\apps\OSGeo4W\apps\Python39\lib\site-packages\django\db\models\sql\query.py", line 1193, in build_lookup
              lookup = lookup_class(lhs, rhs)
              File "C:\apps\OSGeo4W\apps\Python39\lib\site-packages\django\db\models\lookups.py", line 25, in __init__
              self.rhs = self.get_prep_lookup()
              File "C:\apps\OSGeo4W\apps\Python39\lib\site-packages\django\db\models\lookups.py", line 240, in get_prep_lookup
              rhs_value = self.lhs.output_field.get_prep_value(rhs_value)
              File "C:\apps\OSGeo4W\apps\Python39\lib\site-packages\django\db\models\fields\__init__.py", line 1406, in get_prep_value
              value = super().get_prep_value(value)
              File "C:\apps\OSGeo4W\apps\Python39\lib\site-packages\django\db\models\fields\__init__.py", line 1266, in get_prep_value
              return self.to_python(value)
              File "C:\apps\OSGeo4W\apps\Python39\lib\site-packages\django\db\models\fields\__init__.py", line 1358, in to_python
              warnings.warn("DateTimeField %s.%s received a naive datetime "