RelativePath for URI Error

I am trying to code a RelativePath for a URI so I can use schedule refresh in the PowerBI Service, however in Power Query I get the error "Expression.Error: Access to the resource is forbidden." when testing out the RelativePath method. Any ideas for why RelativePath is not working here? 

Here is my code from the error:

let
        Test = Web.Contents("https://files.xxxxx.gov/generated_downloads/All_PrimeTransactions_",
        [RelativePath="2022-11-21_H13M48S59799377.zip"])
in
    Test

 Here is the same URI without RelativePath that works:

let
        Test = Web.Contents("https://files.xxxxx.gov/generated_downloads/All_PrimeTransactions_2022-11-21_H13M48S59799377.zip")
in
    Test