Expression.Error: We cannot apply operator < to types Number and Text

Hello all, I have an below mentioned error

Expression.Error: We cannot apply operator < to types Number and Text

Details:
Operator=<
Left=4
Right=Q9_1

I get this while Pivoting , attached the query below

let
Source = #"Data 1 Sheet",
#"Unpivoted Other Columns" = Table.UnpivotOtherColumns(Source, {"Test Name", "Consumer", "Serving Position", "3_digit_Product_Code", "Sample_Name", "Unique Consumer ID", "Unique Product Code"}, "Attribute", "Value"),
#"Filtered Rows1" = Table.SelectRows(#"Unpivoted Other Columns", each Text.EndsWith([Attribute], "_JAR") or Text.Contains([Attribute], "JAR") or Text.Contains([Attribute], "jar") or Text.Contains([Attribute], "Jar")),
#"Added Conditional Column" = Table.AddColumn(#"Filtered Rows1", "Custom", each if [Value] = 1 then "Too Less" else if [Value] = 2 then "Too Less" else if [Value] = 3 then "Just About Right" else if [Value] >= 4 then "Too Strong" else null),
#"Inserted Literal" = Table.AddColumn(#"Added Conditional Column", "Literal", each 1),
#"Changed Type" = Table.TransformColumnTypes(#"Inserted Literal",{{"Literal", Int64.Type}}),
#"Pivoted Column" = Table.Pivot(#"Changed Type", List.Distinct(#"Changed Type"[Custom]), "Custom", "Literal")
in
#"Pivoted Column"

Can someone help to solve this error, Thanks!