Json document data in power query

Hi all, 

can anyone tell my which part of this Json code is worng? I am seeing an error in power query saying " 

but I don't knwo how to fix it, here is the code 

let
Source = Json.Document(
Web.Contents(
"https://xxxxx.sharepoint.com/sites/pwa/_api/search/query?
querytext='ParentLink:Risks AND contentclass:STS_ListItem'&
rowlimit=500&
rowsperpage=500&
selectproperties=
'Title,
Author,
Path,
Description,
Write,
LastModifiedTime,
ParentLink,
SPWebUrl,
UniqueId'&
TrimDuplicates=false",
[Headers=[Accept="application/json"]]
)
),
PrimaryQueryResult = Source[PrimaryQueryResult],
RelevantResults = PrimaryQueryResult[RelevantResults],
Table = RelevantResults[Table],
#"Converted to Table" = Record.ToTable(Table),
#"Expanded Value" = Table.ExpandListColumn(#"Converted to Table", "Value"),
#"Expanded Value1" = Table.ExpandRecordColumn(#"Expanded Value", "Value", {"Cells"}, {"Value.Cells"}),
#"Removed Other Columns" = Table.SelectColumns(#"Expanded Value1",{"Value.Cells"}),
#"Added Index" = Table.AddIndexColumn(#"Removed Other Columns", "Index", 1, 1),
#"Expanded Value.Cells" = Table.ExpandListColumn(#"Added Index", "Value.Cells"),
#"Expanded Value.Cells1" = Table.ExpandRecordColumn(#"Expanded Value.Cells", "Value.Cells", {"Key", "Value", "ValueType"}, {"Value.Cells.Key", "Value.Cells.Value", "Value.Cells.ValueType"}),
#"Removed Columns" = Table.RemoveColumns(#"Expanded Value.Cells1",{"Value.Cells.ValueType"}),
#"Pivoted Column" = Table.Pivot(#"Removed Columns", List.Distinct(#"Removed Columns"[Value.Cells.Key]), "Value.Cells.Key", "Value.Cells.Value"),
#"Removed Columns1" = Table.RemoveColumns(#"Pivoted Column",{"Index"}),
#"Replaced Value" = Table.ReplaceValue(#"Removed Columns1","{","",Replacer.ReplaceText,{"UniqueId"}),
#"Replaced Value1" = Table.ReplaceValue(#"Replaced Value","}","",Replacer.ReplaceText,{"UniqueId"}),
#"Lowercased Text" = Table.TransformColumns(#"Replaced Value1",{{"UniqueId", Text.Lower, type text}})
in
#"Lowercased Text"

Thanks for your help