multipart/form-data multiples propreties required in swagger display "unvalid"

This is the working request body:

"requestBody": {
          "required": true,
          "content": {
            "multipart/form-data": {
              "schema": {
                "type": "object",
                "required": [
                  "video",
                  "encodings"
                ],
                "properties": {
                  "video": {
                    "type": "string",
                    "format": "binary",
                    "description": "Upload video file"
                  },
                  "encodings": {
                    "type": "string",
                    "format": "binary",
                    "description": "Upload video file "
                  
                  }
                }
              } 
            }
          }
        }

This is the error message:

{"messages":["attribute paths.'/smile_video'(post).requestBody.content.'multipart/form-data'.schema.required is not of type `array`"],"schemaValidationMessages":[{"level":"error","domain":"validation","keyword":"oneOf","message":"instance failed to match exactly one schema (matched 0 out of 2)","schema":{"loadingURI":"#","pointer":"/definitions/Operation/properties/requestBody"},"instance":{"pointer":"/paths/~1smile_video/post/requestBody"}}]}

I resolve this by disabling validation: validatorUrl : false

const ui = SwaggerUIBundle({
        url: url,
        dom_id: '#swagger-ui',
        deepLinking: true,
        validatorUrl : false,
        presets: [
          SwaggerUIBundle.presets.apis,
          SwaggerUIStandalonePreset
        ],
        plugins: [
          SwaggerUIBundle.plugins.DownloadUrl
        ]
      });
      ```

Start by reproducing the multipart/form-data request body and its validation error using the validator configuration shown. Trace why the schema's required array is rejected, then verify that the request validates without setting validatorUrl to false.