Sentiment Analysis Power BI

I am trying to run a sentiment analysis using Power BI and Microsoft cognitive text analysis.

This is my code for the query.

    (Source as table) as any =>
let
    JsonRecords = Text.FromBinary(Json.FromValue(Source)),
    JsonRequest = "{""documents"": " & JsonRecords & "}",

    JsonContent = Text.ToBinary(JsonRequest, TextEncoding.Ascii),
    Response =
        Web.Contents("https://westcentralus.api.cognitive.microsoft.com/text/analytics/v2.0",
            [
                Headers = [#"Ocp-Apim-Subscription-Key"= APIKey,
                           #"Content-Type"="application/json", Accept="application/json"],
                Content=JsonContent
            ]),
    JsonResponse = Json.Document(Response,1252)
in
    JsonResponse

As far as I'm concerned I did create my parameters correctly. I also double checked my key and API.

I receive this error:

An error occurred in the ‘’ query. DataSource.Error: Web.Contents failed to get contents from 'https://westcentralus.api.cognitive.microsoft.com/text/analytics/v2.0' (404): Resource Not Found Details: DataSourceKind=Web DataSourcePath=https://westcentralus.api.cognitive.microsoft.com/text/analytics/v2.0 Url=https://westcentralus.api.cognitive.microsoft.com/text/analytics/v2.0

This documentation indicates that POST request is to a /sentiment endpoint, so you should update the URL to https://westcentralus.api.cognitive.microsoft.com/text/analytics/v2.0/sentiment.