diff --git a/goextVersion.go b/goextVersion.go
index 3d218cf..f617862 100644
--- a/goextVersion.go
+++ b/goextVersion.go
@@ -1,5 +1,5 @@
 package goext
 
-const GoextVersion = "0.0.555"
+const GoextVersion = "0.0.556"
 
-const GoextVersionTimestamp = "2025-01-09T10:39:56+0100"
+const GoextVersionTimestamp = "2025-01-09T10:41:00+0100"
diff --git a/wpdf/wpdfTable.go b/wpdf/wpdfTable.go
index a8e576f..1cff0b9 100644
--- a/wpdf/wpdfTable.go
+++ b/wpdf/wpdfTable.go
@@ -123,7 +123,7 @@ func (b *TableBuilder) Build() {
 			err := exerr.New(exerr.TypeInternal, "data must have the same length as header").
 				Int("idx", i).
 				Strs("cells", langext.ArrMap(dat.cells, func(v TableCell) string { return v.Content })).
-				Any("colWidths", b.columnWidths).
+				Strs("colWidths", langext.Coalesce(b.columnWidths, nil)).
 				Build()
 			builder.FPDF().SetError(err)
 			return