[Fixed]-Django __call__() missing 1 required keyword-only argument: 'manager'

Here is my case, I am using django shell:

python manage.py shell

There are two models: Topic and Entry. I tried to get all entries from Topic which id is 1.

>>> Topic.objects.get(id=1)
<Topic: Chess>
>>> t = Topic.objects.get(id=1)
>>> t.entry_set().all()
Traceback (most recent call last):
  File "<console>", line 1, in <module>
TypeError: __call__() missing 1 required keyword-only argument: 'manager'
>>> t.entry_set.all()
<QuerySet [<Entry: Ah okey, so when testing for a console.log (or oth...>]>
>>> 

The correct command is: t.entry_set.all(), not t.entry_set().all()

Use entry_set instead of entry_set() (wihout brackets)