Django异常发生时的奇怪行为，使用django-rest-framework

from rest_framework.views import APIView
from rest_framework.response import Response
from rest_framework import status
from django.core.exceptions import ObjectDoesNotExist

class ExampleView(APIView):
    def get(self, request, pk):
        try:
            # 尝试获取对象
            obj = MyModel.objects.get(pk=pk)
        except ObjectDoesNotExist:
            # 如果对象不存在，返回404错误
            return Response({'error': 'Object not found'}, status=status.HTTP_404_NOT_FOUND)
        except Exception as e:
            # 捕获其他所有异常，返回500错误
            return Response({'error': str(e)}, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
        
        # 如果一切正常，序列化对象并返回
        serializer = MyModelSerializer(obj)
        return Response(serializer.data)