Added refresh page message for Legacy CMS undefined step error

Author: sayalijoshi27

ui/src/pages/Migration/index.tsx

@@ -403,7 +403,7 @@ const Migration = () => {
         }
         if (currentIndex !== 3) {
           Notification({
-            notificationContent: { text: `Please complete ${result} step` },
+            notificationContent: { text: result === undefined ? `Something went wrong. Please refresh the page.` : `Please complete ${result} step` },
             type: 'warning'
           });
         }

ui/src/pages/Projects/index.tsx

@@ -170,7 +170,7 @@ const Projects = () => {
         {loadStatus ? (
           <div className="flex-wrap">
             {[...Array(20)].map((e, i) => (
-               <StackCardSkeleton key={i} />
+               <StackCardSkeleton key={`${i?.toString()}`} />
             ))}
           </div>
         ) : (