Erro : Can't visualize network: SVM

On Workbench Regression Example-- Auto MPG, By following the steps, I generated all the files, then I tried to generate the structure of the neural network by using visulazie, then Erro : Can't visualize network: SVM came out. I also tried example of IRIS, it works fine. I think it is because of the meachine learning method used in this example( Support Vector Machine), Does anyone know how to avoid this erro or how to generate the structure of the network?