swagger ui fails to show sample response with items in response

[RaghebAD]

    "responses": {
          "200": {
            "description": "getSummaryFromDateRange response",
            "schema": {
              "items": {
                "$ref": "#/definitions/SummaryResponse"
              }
            }
          }
        }

shows yellow line instead of a sample response

I tried the same swagger file on https://editor.swagger.io/ , it works fine.

[mathieuales]

your api descriptor is missing field type which is required as described in openapi spec