X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/461fdaa1b96142b8065c131ae0334046fc71ea56..73aff80c1f97e854203f75375dbef1924671667e:/services/workbench2/src/components/tree/tree.tsx

diff --git a/services/workbench2/src/components/tree/tree.tsx b/services/workbench2/src/components/tree/tree.tsx
index 11a9540290..1f7aa8326d 100644
--- a/services/workbench2/src/components/tree/tree.tsx
+++ b/services/workbench2/src/components/tree/tree.tsx
@@ -252,7 +252,7 @@ const FlatTree = (props: FlatTreeProps) =>
     >
         {
             (props.it.items || [])
-                .map((item: any) => <div key={item.id} data-id={item.id}
+                .map((item: any, index: number) => <div key={item.id || index} data-id={item.id}
                     className={classnames(props.classes.childItem, { [props.classes.active]: item.active })}
                     style={{ paddingLeft: `${item.depth * props.levelIndentation}px` }}>
                     {isInFavoritesTree(props.it) ?