diff --git a/backend/src/cache/MangaUpdatesCache.ts b/backend/src/cache/MangaUpdatesCache.ts
index c3a3697..358d674 100644
--- a/backend/src/cache/MangaUpdatesCache.ts
+++ b/backend/src/cache/MangaUpdatesCache.ts
@@ -78,11 +78,13 @@ export class MangaUpdatesCache {
       .filter(([title, entry]) => entry.lastUpdateMs + this.MAX_CACHE_AGE_SEARCH_BY_TITLE < Date.now())
       .map(([title, entry]) => title);
   }
+
   getOutOfDateSeries(): string[] {
     return Array.from(this._seriesById.entries())
       .filter(([title, entry]) => entry.lastUpdateMs + this.MAX_CACHE_AGE_SERIES_BY_ID < Date.now())
       .map(([title, entry]) => title);
   }
+
   getOutOfDateSeriesGroups(): string[] {
     return Array.from(this._seriesGroupsById.entries())
       .filter(([title, entry]) => entry.lastUpdateMs + this.MAX_CACHE_AGE_SERIES_GROUPS_BY_ID < Date.now())
diff --git a/backend/src/main.ts b/backend/src/main.ts
index 032254c..4c2e861 100644
--- a/backend/src/main.ts
+++ b/backend/src/main.ts
@@ -8,7 +8,7 @@ import * as fs from 'fs';
 import {MangaDexCache} from './cache/MangaDexCache';
 import mangaDexRouter from './router/MangaDexRouter';
 
-const config = JSON.parse(fs.readFileSync('config.json').toString())
+const config = JSON.parse(fs.readFileSync('config.json').toString());
 
 const app = express();
 const mangaDexCache = new MangaDexCache();
@@ -25,7 +25,7 @@ app.use(express.json());
 app.use('/anilist', aniListRouter());
 app.use('/mangadex', mangaDexRouter(mangaDexCache));
 app.use('/mangaupdates', mangaUpdatesRouter(mangaUpdatesCache));
-app.use(express.static('_client')) //for production
+app.use(express.static('_client')); //for production
 
 //start
 app.listen(config.port, config.host, () => {
diff --git a/frontend/src/data/service/MangaUpdatesDataService.ts b/frontend/src/data/service/MangaUpdatesDataService.ts
index 7cd93b2..09eddaa 100644
--- a/frontend/src/data/service/MangaUpdatesDataService.ts
+++ b/frontend/src/data/service/MangaUpdatesDataService.ts
@@ -16,17 +16,11 @@ export default class MangaUpdatesDataService {
     const mangaStore = new MangaStore();
     const dbStore = new DbStore();
     return this.findMissingRelations(mangaStore, dbStore, progress)
-      .catch(err => {
-        console.error(err);
-      })
+      .catch(err => console.error(err))
       .then(_ => this.fetchSeriesUpdates(mangaStore, dbStore, progress))
-      .catch(err => {
-        console.error(err);
-      })
+      .catch(err => console.error(err))
       .then(_ => this.fetchSeriesChapterUpdates(mangaStore, dbStore, progress))
-      .catch(err => {
-        console.error(err);
-      })
+      .catch(err => console.error(err))
       .then(_ => progress.onFinished());
   }
 
@@ -73,6 +67,7 @@ export default class MangaUpdatesDataService {
           }
           break;
         }
+
         if (matching.length === 0) {
           continue;
         }
@@ -117,7 +112,7 @@ export default class MangaUpdatesDataService {
     const series = await dbStore.mangaUpdatesRepository.getSeries();
 
     let i = 0;
-    const cachedChapterUpdates: MangaUpdatesChapter[] = []
+    const cachedChapterUpdates: MangaUpdatesChapter[] = [];
     for (const s of series) {
       try {
         let groups;
@@ -146,7 +141,7 @@ export default class MangaUpdatesDataService {
         //only keep chapter with the highest chapter number per group
         const filtered = Array.from(groupBy(updates, c => c.group).values())
           .map(chaptersOfGroup => chaptersOfGroup.reduce((l, r) => l.chapter > r.chapter ? l : r, chaptersOfGroup[0]));
-        cachedChapterUpdates.push(...filtered)
+        cachedChapterUpdates.push(...filtered);
       } finally {
         await progress.onProgress('mangaUpdates.chapters', ++i, series.length);
       }