Hi guys, I need help with the following issue, I am trying to connect with an API with a "next" on the end of the page, this next contains a new URL that gives us the next page, I need to loop this in Power BI until I have all the data. The point is, I get the following error while I am using the right credentials: 

Web.Contents - we couldn't authenticate with the credentials provided (using anonymous credentials)

I am trying the following:

(baseuri as text) =>

let

    headers = [Headers=[Accept="application/json", Authorization="Basic xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"]],

    initReq = Json.Document(Web.Contents(baseuri, headers)),

    initData = initReq[data],

    //We want to get data = {lastNPagesData, thisPageData}, where each list has the limit # of Records,

    //then we can List.Combine() the two lists on each iteration to aggregate all the records. We can then

    //create a table from those records

    gather = (data as list, uri) =>

        let

            //get new offset from active uri

            newOffset = Json.Document(Web.Contents(uri, headers))[next],

            //build new uri using the original uri so we dont append offsests

            newUri = newOffset,

            //get new req & data

            newReq = Json.Document(Web.Contents(newUri, headers)),

            newdata = newReq[data],

            //add that data to rolling aggregate

            data = List.Combine({data, newdata}),

            //if theres no next page of data, return. if there is, call @gather again to get more data

            check = if newReq[next_page] = null then data else @gather(data, newUri)

        in check,

    //before we call gather(), we want see if its even necesarry. First request returns only one page? Return.

    outputList = if initReq[next_page] = null then initData else gather(initData, baseuri),

    //then place records into a table. This will expand all columns available in the record.

    expand = Table.FromRecords(outputList)

in

    expand


I first received the error that the datasource needs to be anonymously, changing that brings me this error. How do I need to solve this?