Report: How to Access Reports in Web Portal

I am creating a web portal for my ERPNext instance. I have to show reports in my Web portal but I am not able to access the existing reports[E.g. Sales Analytics]. I have tried using the below method:{"value_quantity":"Value","company":"ABC","from_date":"2022-04-01","to_date":"2022-06-01"}&limit_page_length=100&limit_start=0

But it is showing the following Error:

Any help will be appreciated!