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2017-08-18 11:19:39,907: Internal Server Error: /meals/#012Traceback (most recent call last):#012  File "/usr/local/lib/python3.5/dist-packages/django/core/handlers/base.py", line 149, in get_response#012    response = self.process_exception_by_middleware(e, request)#012  File "/usr/local/lib/python3.5/dist-packages/django/core/handlers/base.py", line 147, in get_response#012    response = wrapped_callback(request, *callback_args, **callback_kwargs)#012  File "/usr/local/lib/python3.5/dist-packages/django/views/decorators/csrf.py", line 58, in wrapped_view#012    return view_func(*args, **kwargs)#012  File "/home/doskonale/.local/lib/python3.5/site-packages/rest_framework/viewsets.py", line 83, in view#012    return self.dispatch(request, *args, **kwargs)#012  File "/home/doskonale/.local/lib/python3.5/site-packages/rest_framework/views.py", line 477, in dispatch#012    response = self.handle_exception(exc)#012  File "/home/doskonale/.local/lib/python3.5/site-packages/rest_framework/views.py", line 437, in handle_exception#012    self.raise_uncaught_exception(exc)#012  File "/home/doskonale/.local/lib/python3.5/site-packages/rest_framework/views.py", line 474, in dispatch#012    response = handler(request, *args, **kwargs)#012  File "/home/doskonale/.local/lib/python3.5/site-packages/rest_framework/mixins.py", line 21, in create#012    self.perform_create(serializer)#012  File "/home/doskonale/.local/lib/python3.5/site-packages/rest_framework/mixins.py", line 26, in perform_create#012    serializer.save()#012  File "/home/doskonale/.local/lib/python3.5/site-packages/rest_framework/serializers.py", line 214, in save#012    self.instance = self.create(validated_data)#012  File "/home/doskonale/.local/lib/python3.5/site-packages/rest_framework/serializers.py", line 888, in create#012    raise_errors_on_nested_writes('create', self, validated_data)#012  File "/home/doskonale/.local/lib/python3.5/site-packages/rest_framework/serializers.py", line 780, in raise_errors_on_nested_writes#012    class_name=serializer.__class__.__name__#012AssertionError: The `.create()` method does not support writable nested fields by default.#012Write an explicit `.create()` method for serializer `restapp.serializers.MealNestedSerializer`, or set `read_only=True` on nested serializer fields.