The dashboard view is part of the Odoo enterprise edition so you can't use it with community edition. If you are using the enterprise edition, you need to add dependency of the web_dashboard in the manifest file of your module.

In our example, we will display a few KPIs and a few existing views. We will display the graph and the pivot view in the same screen, so follow the Defining graph and pivot views recipe, if you haven't created the pivot and graph views. We will use the ID of these views in the dashboard view.