title: Vertex AI - cannot create managed notebook instance
body: <p>I'm following all the (easy) steps in the <a href="https://cloud.google.com/vertex-ai/docs/workbench/managed/quickstart-create-console" rel="nofollow noreferrer">documentation</a>, but I'm stuck at clicking the &quot;CREATE&quot; button. When I click it, the process runs for a few seconds, then the button re-appears, like I never clicked it.</p>
  <p>If I go back to the &quot;Managed Notebooks&quot; page, no instance is present.</p>
  <p>Am I missing something basic? Has someone the same problem as mine?</p>