Power BI Rest Api

Hey guys, I really need your help. I am trying to import data to the Power bi through Rest API Azure devops using the code below, but somehow can not pass authorization, I can see that it is returning me html code, where is the page with sign in information. Could anyone suggest, what I am doing wrong?

Code:

let

apiUrl = "URL",

AccessToken = "my access token here",

headers = [

#"Authorization" = "Bearer " & accessToken,

#"Content-Type" = "application/json"

],

options = [

Headers = headers

],

response = try Web.Contents(apiUrl, options) otherwise null

in

response