swagger isn't working properly

I created a custom APIView for creating reports for specific collabarators .
When I tried to add this api view to swagger and make post request from there it gives me
TypeError: ‘NoneType’ object is not iterable, but when I post through the django endpoint it works fine. I added print to check what might go wrong, and noticed that data doesn’t get “collabarators” field value list.

class ReportView(APIView):
    permission_classes = [IsAuthenticated]


    def get(self, *args, **kwargs):
        tasks = ProjectTask.objects.all().exclude(Q(task_status__in=[0, 1, 2]) | Q(priority__in=[0]))
        # print(tasks)
        report = get_report_productivity(tasks)
        return Response({"report":report}, 200)

    @swagger_auto_schema(
        request_body=openapi.Schema(
            type=openapi.TYPE_OBJECT,
            properties={
                'collaborators': openapi.Schema(
                    type=openapi.TYPE_ARRAY,
                    items=openapi.Items(type=openapi.TYPE_INTEGER)
                ),
            },
            required=['collaborators']
        ),
        responses={202: openapi.Response('Response description', openapi.Schema(
            type=openapi.TYPE_OBJECT,
            properties={
                'report': openapi.Schema(
                    type=openapi.TYPE_ARRAY,
                    items=openapi.Schema(type=openapi.TYPE_OBJECT)
                )
            }
        ))}
    )
    def post(self, request, *args, **kwargs):
        data = request.data.get('collabarators')
        print(type(data))
        print(request.data.get('collabarators'))
        print(request.data)
        print(data)
        if data is None:
            return Response({"ok":"ok"}, 202)
        # print(data)
        # print(type(data))
        # queryset = ProjectTask.objects.filter(executer__id__in=data)
        # print(data)
        # print(type(data))
        # return Response({"ok":"ok"}, 202)
        queryset = ProjectTask.objects.none()
        for i in data:
            queryset |= ProjectTask.objects.filter(executer__id=i).exclude(Q(task_status__in=[0, 1, 2]) | Q(priority__in=[0]))
        report = get_report_productivity(queryset)
        return Response({"report":report}, 202)