Formula.Firewall - Please rebuild this combination error

Hi Cherry (v-piga-msft),

I had tried that blog on researching this previously.  Here is an example of one my tables that has corrupted on refresh last night despite not having changed any of my parameters.

You'll note that this is referencing a SharePoint file and does not otherwise merge, unless invoking a function causes the same error. This would be a woeful design though considering that invoked function is system generated when you extract data from the file. 

Following is the code for reference. 

let
    Source = SharePoint.Files(P_SharePointLocation, [ApiVersion = 15]),
    Custom1 = Table.SelectRows(Source, each Text.StartsWith([Folder Path], P_SharePointProjFcstSubmissions) or Text.StartsWith([Folder Path], P_SharePointProjBudSubmissions)),
    #"Invoke Custom Function1" = Table.AddColumn(Custom1, "Transform File from Query1 (4)", each #"Transform File from Query1 (4)"([Content])),
    #"Renamed Columns1" = Table.RenameColumns(#"Invoke Custom Function1", {"Name", "Source.Name"}),
    #"Removed Other Columns1" = Table.SelectColumns(#"Renamed Columns1", {"Source.Name", "Transform File from Query1 (4)"}),
    #"Expanded Table Column1" = Table.ExpandTableColumn(#"Removed Other Columns1", "Transform File from Query1 (4)", Table.ColumnNames(#"Transform File from Query1 (4)"(#"Sample File (4)"))),
    #"Trimmed Text" = Table.TransformColumns(#"Expanded Table Column1",{{"Resource Name or <new demand>", Text.Trim, type text}}),
    #"Replaced Value" = Table.ReplaceValue(#"Trimmed Text",null,0,Replacer.ReplaceValue,{"FTE #(lf)Jan-18", "FTE #(lf)Feb-18", "FTE #(lf)Mar-18", "FTE #(lf)Apr-18", "FTE #(lf)May-18", "FTE #(lf)Jun-18", "FTE #(lf)Jul-18", "FTE #(lf)Aug-18", "FTE #(lf)Sep-18", "FTE #(lf)Oct-18", "FTE #(lf)Nov-18", "FTE #(lf)Dec-18", "Total Days 2018", "FTE #(lf)Jan-19", "FTE #(lf)Feb-19", "FTE #(lf)Mar-19", "FTE #(lf)Apr-19", "FTE #(lf)May-19", "FTE #(lf)Jun-19", "FTE #(lf)Jul-19", "FTE #(lf)Aug-19", "FTE #(lf)Sep-19", "FTE #(lf)Oct-19", "FTE #(lf)Nov-19", "FTE #(lf)Dec-19", "Total Days 2019", "FTE#(lf)2020", "FTE#(lf)2021", "FTE#(lf)2022", "Total Days WoL"})
in
    #"Replaced Value"

Any alternate suggestions would be very welcome.

Cheers
KC