Dynamic Data Source Error in Power Query

[Syndicate_Admin]

I'm getting Dynamic Data Source error in Power Query as below :
"Some data sources may not be listed because of hand-authored query"

and below is my code; How should I modify it?

let
BaseUrl = "https://yourdomain.udemy.com/api-2.0/organizations/224484/analytics/user-course-activity/",
EntitiesPerPage = 100,

GetJson = (Url) =>
let Options = [Headers=[ #"Authorization" = "Token"]],
RawData = Web.Contents(Url, Options),
Json = Json.Document(RawData)
in Json,

GetEntityCount = () =>
let Url = BaseUrl,
Json = GetJson(Url),
Count = Json[#"count"]
in Count,

GetPage = (Index) =>
let Page = "?&page=" & Text.From(Index),
Page_Size = "&page_size=100",
Url = BaseUrl & Page & Page_Size,
Json = GetJson(Url),
Value = Json[#"results"]
in Value,

EntityCount = List.Max({ EntitiesPerPage, GetEntityCount() }),
PageCount = Number.RoundUp(EntityCount / EntitiesPerPage),
PageIndices = {1 .. PageCount},
Pages = List.Transform(PageIndices, each GetPage(_)),
Entities = List.Union(Pages),
Table = Table.FromList(Entities, Splitter.SplitByNothing(), null, null, ExtraValues.Error),

[Syndicate_Admin]

Dear  Syndicate,
Thanks for your response.

Actually, error happens when we want to refresh the dashboard on Power BI Service, as below. 
I've also attached error screenshot. 

Error Message:
"This dataset includes a dynamic data source. Since dynamic data sources aren't refreshed in the Power BI service, this dataset won't be refreshed. " 

[lbendlin]

That's not an error, only a note.  Do you have an actual issue with the query?

[Syndicate_Admin]

Dear  Syndicate,
Thanks for your response.

Actually, error happens when we want to refresh the dashboard on Power BI Service, as below. 
I've also attached error screenshot. 

Error Message:
"This dataset includes a dynamic data source. Since dynamic data sources aren't refreshed in the Power BI service, this dataset won't be refreshed. " 

[lbendlin]

Please read the documentation of Web.Contents - you need to use the Query parameter.

[Syndicate_Admin]

Yeah, I know  but unfortunately I don't know how exactly I should do that. Can you modify the M code that I've mentioned above?

[lbendlin]

you would need to add a second parameter to the GetJSON function.

GetJson = (Url,q) =>
let Options = [Headers=[ #"Authorization" = "Token"],Query=q],
RawData = Web.Contents(Url, Options),
Json = Json.Document(RawData)
in Json,