Error running query

I am getting the follow error running my query:

Expression.Error: We cannot convert the value 7 to type Record.
Details:
Value=7
Type=[Type]

 

Any idea how to troubleshoot that problem?

 

Here is my code:

url_system = "https://localhost:446/api/home/system",
    Credentials = "Bearer " & Token[access_token],
    System = Json.Document(Web.Contents(url_system, 
            [
                Headers = [#"Content-Type"="application/json",#"Authorization"=Credentials]
            ]
        )
    ),
    #"Converted to Table" = Record.ToTable(System),
    #"Added Index" = Table.AddIndexColumn(#"Converted to Table", "Index", 0, 1, Int64.Type),
    #"Filtered Rows" = Table.SelectRows(#"Added Index", each ([Value] <> 3288)),
    #"Expanded Value" = Table.ExpandRecordColumn(#"Filtered Rows", "Value", {"OkCount", "AlertCount", "Details"}, {"Value.OkCount", "Value.AlertCount", "Value.Details"}),
    #"Expanded Value.Details" = Table.ExpandListColumn(#"Expanded Value", "Value.Details"),
    #"Expanded Value.Details1" = Table.ExpandRecordColumn(#"Expanded Value.Details", "Value.Details", {"Id", "Name", "LastUpdated", "Status", "StatusColor", "WarningInfo", "AlarmInfo"}, {"Value.Details.Id", "Value.Details.Name", "Value.Details.LastUpdated", "Value.Details.Status", "Value.Details.StatusColor", "Value.Details.WarningInfo", "Value.Details.AlarmInfo"}),
    #"Changed Type" = Table.TransformColumnTypes(#"Expanded Value.Details1",{{"Value.Details.LastUpdated", type datetime}})
in
    #"Changed Type"

 

 

 

Thanks