add key props

web/components/groups/group-overview.tsx

@@ -264,7 +264,7 @@ export function PinnedItems(props: {
             </div>
           )}
           {pinned.map((element, index) => (
-            <div className="relative mb-4">
+            <div className="relative mb-4" key={element.key}>
               {element}
 
               {editMode && <CrossIcon onClick={() => onDeleteClicked(index)} />}

web/pages/home/index.tsx

@@ -277,6 +277,7 @@ function renderSections(
         if (id === 'featured') {
           return (
             <FeaturedSection
+              key={id}
               globalConfig={globalConfig}
               pinned={pinned}
               isAdmin={isAdmin}