              response_schema = {
                  'type': 'array',
                  'items': item_schema,
              }
              paginator = self._get_pagninator()
              if paginator:
                  response_schema = paginator.get_paginated_response_schema(response_schema)
          else:
              response_schema = item_schema
  
 
</s> remove         paginator = self._get_pagninator()
 </s> add         paginator = self._get_paginator() </s> remove     def _get_pagninator(self):
 </s> add     def _get_paginator(self):
            paginator = self._get_paginator()
              response_schema = {
                  'type': 'array',
                  'items': item_schema,
              }
            paginator = self._get_paginator()
              if paginator:
                  response_schema = paginator.get_paginated_response_schema(response_schema)
          else:
              response_schema = item_schema
  
keep keep keep keep replace keep keep keep keep keep
 Fix a spelling error in openapi AutoSchema method (#7004)

Replace "pagninator" by "paginator". 
rest_framework/schemas/openapi.py