Merge branch 'master' into presentation_upgrade

1 files changed, 1 insertions, 1 deletions

diff --git a/src/client/views/collections/collectionFreeForm/CollectionFreeFormLayoutEngines.tsx b/src/client/views/collections/collectionFreeForm/CollectionFreeFormLayoutEngines.tsx
index 16c7df311..9de2cfcf9 100644
--- a/src/client/views/collections/collectionFreeForm/CollectionFreeFormLayoutEngines.tsx
+++ b/src/client/views/collections/collectionFreeForm/CollectionFreeFormLayoutEngines.tsx
@@ -147,7 +147,7 @@ export function computePivotLayout(
     const pivotColumnGroups = new Map<FieldResult<Field>, PivotColumn>();
 
     let nonNumbers = 0;
-    const pivotFieldKey = toLabel(engineProps?.pivotField ?? pivotDoc._pivotField);
+    const pivotFieldKey = toLabel(engineProps?.pivotField ?? pivotDoc._pivotField) || "author";
     childPairs.map(pair => {
         const lval = pivotFieldKey === "#" || pivotFieldKey === "tags" ? Array.from(Object.keys(Doc.GetProto(pair.layout))).filter(k => k.startsWith("#")).map(k => k.substring(1)) :
             Cast(pair.layout[pivotFieldKey], listSpec("string"), null);