Cannot Preview Page Error in VBS

Summary:

Hi There,

I m trying to get hands on using VBS to update or modify few payroll pages. As a start I used Journey's module and click on my tasks and then Edit Page using VBS. However, page is giving error "Cannot preview page". Please see screenshot below.

Also, if I click on any other sub section of the page such as "Contextual-Journey-Preview", I m getting following error and screen just shows its loading but nothing appears. Please find Screenshot below.

Kindly, advise, do I need access to any role or privilege to work with VBS.

Thank you,

Priya