Expression.Error: We cannot convert a value of type Table to type Text.

Hi,

I am trying to copy my Power Query which is working in Power Bi desktop into a data flow. Where the power query works in Desktop, it gives the following error when running the query in data flow online.

"Expression.Error: We cannot convert a value of type Table to type Text"

Is there a way to solve this expression error so I can load my dataset in the online data flow environment.

Below first part of the query

let
  // *** STEP 1: RETRIEVE SESSIONID ***
  #"1. Set up Session" = Xml.Tables(Web.Contents(pURL_Logon,
        [
            Content=Text.ToBinary(XML_Session),
            Headers=[#"Content-Type" = "text/xml;charset=UTF-8"]
        ] )),
  ExpandedSession = Table.ExpandTableColumn(#"1. Set up Session", "Table", {"Name", "Table"}, {"Name.1", "Table"}),
  ExpandedSession2 = Table.ExpandTableColumn(ExpandedSession, "Table", {"Name", "Table"}, {"Name.2", "Table"}),
  ExpandedSession3 = Table.ExpandTableColumn(ExpandedSession2, "Table", {"SessionID", "AccessToken", "LogonResult", "nextAction", "cluster"}, {"SessionID", "AccessToken", "LogonResult", "nextAction", "cluster"}),

Thanks,

Leon