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Table.AddColumn - Unable to refresh the model because it references an unsupported data source

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Hello, I create dataset in Desktop which look like this:

 

Pages = DateTime.Date(DateTime.LocalNow()) - Date.FromText("2017-01-01"),
Iterations = Number.RoundUp(Duration.Days(Pages) / 30),
IterTable = Table.FromColumns({{1..Iterations}}),
GetData = Table.AddColumn(IterTable, "New", each Json.Document(Web.Contents("https://myurl..../?date_from=2017-0" & Text.From([Column1]) & "-01&date_to=2017-0" & Text.From([Column1]) & "-31")) ),
in
#"GetData"

 

When I try manually refresh data in web service it says "Unable to refresh the model because it references an unsupported data source" , but if I remove string with Table.AddColumn.... its work fine. Is there reason in Table.AddColumn or in that its calling Json in cycle ? There is any workaround ?


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