====================================================================== ERROR: test_add_implementation (aggregation.tests.AggregateTestCase) ---------------------------------------------------------------------- Traceback (most recent call last): File "/home/tim/code/django/django/db/backends/utils.py", line 84, in _execute return self.cursor.execute(sql, params) psycopg2.errors.InvalidParameterValue: sum(): unsupported binary operator: <float> + <int> The above exception was the direct cause of the following exception: Traceback (most recent call last): File "/home/tim/code/django/tests/aggregation/tests.py", line 1045, in test_add_implementation b1 = qs.get(pk=self.b4.pk) File "/home/tim/code/django/django/db/models/query.py", line 402, in get num = len(clone) File "/home/tim/code/django/django/db/models/query.py", line 256, in __len__ self._fetch_all() File "/home/tim/code/django/django/db/models/query.py", line 1242, in _fetch_all self._result_cache = list(self._iterable_class(self)) File "/home/tim/code/django/django/db/models/query.py", line 55, in __iter__ results = compiler.execute_sql(chunked_fetch=self.chunked_fetch, chunk_size=self.chunk_size) File "/home/tim/code/django/django/db/models/sql/compiler.py", line 1100, in execute_sql cursor.execute(sql, params) File "/home/tim/code/django/django/db/backends/utils.py", line 99, in execute return super().execute(sql, params) File "/home/tim/code/django/django/db/backends/utils.py", line 67, in execute return self._execute_with_wrappers(sql, params, many=False, executor=self._execute) File "/home/tim/code/django/django/db/backends/utils.py", line 76, in _execute_with_wrappers return executor(sql, params, many, context) File "/home/tim/code/django/django/db/backends/utils.py", line 84, in _execute return self.cursor.execute(sql, params) File "/home/tim/code/django/django/db/utils.py", line 89, in __exit__ raise dj_exc_value.with_traceback(traceback) from exc_value File "/home/tim/code/django/django/db/backends/utils.py", line 84, in _execute return self.cursor.execute(sql, params) django.db.utils.DataError: sum(): unsupported binary operator: <float> + <int>