Another autoyast error

I’m getting a “UI syntax error” dialog when I specify a pre-install script (below), with the log files showing

No widget with ID WizardDialog

.


    <pre-scripts t="list">
      <script>
        <feedback t="boolean">false</feedback>
        <feedback_type>message</feedback_type>
        <notification>The pre-install script is running.</notification>
        <interpreter>perl</interpreter>
        <location>http://my/leap/15.3/install/scripts/pi.pl</location>
      </script>
    </pre-scripts>