Fix "no results" on overview page

client/src/app/shared/overview/overview.service.ts

@@ -56,6 +56,8 @@ export class OverviewService {
       }
     }
 
+    if (observables.length === 0) return of(videosOverviewResult)
+
     return forkJoin(observables)
       .pipe(
         // Translate categories

server/initializers/constants.ts

@@ -660,6 +660,7 @@ if (isTestInstance() === true) {
 
   CACHE.VIDEO_CAPTIONS.MAX_AGE = 3000
   MEMOIZE_TTL.OVERVIEWS_SAMPLE = 1
+  ROUTE_CACHE_LIFETIME.OVERVIEWS.VIDEOS = '0'
 }
 
 updateWebserverConfig()