I am trying to create form where I would like to make a call to SharePoint REST Api.
I am following this article to use Azure Function to make REST Call.
https://powerapps.microsoft.com/en-us/blog/using-azure-functions-in-powerapps/
By following above link. I am able to upload the swagger file as a custom API in Power Apps. But, I when I try to call any
of the function from swagger file then it doesn't work.
I am getting following error.

Is there any example which makes SharePoint REST API call to List and retrieve data ?