diff --git a/backend/analytics-db.js b/backend/analytics-db.js
index 8465f78..d8a36df 100644
--- a/backend/analytics-db.js
+++ b/backend/analytics-db.js
@@ -13,7 +13,11 @@ function loadDB() {
 }
 
 function saveDB(data) {
-  writeFileSync(DB_FILE, JSON.stringify(data, null, 2));
+  try {
+    writeFileSync(DB_FILE, JSON.stringify(data, null, 2));
+  } catch (e) {
+    console.error('Analytics DB Schreibfehler:', e.message);
+  }
 }
 
 let db = loadDB();
diff --git a/backend/server.js b/backend/server.js
index 8eaba26..921e3e1 100644
--- a/backend/server.js
+++ b/backend/server.js
@@ -20,17 +20,19 @@ app.use((req, res, next) => {
   if (req.method === 'OPTIONS' || !req.path.startsWith('/api/')) return next();
   if (req.path.startsWith('/api/analytics')) return next();
 
-  let userId = null;
-  const authHeader = req.headers.authorization;
-  if (authHeader && authHeader.startsWith('Bearer ')) {
-    try {
-      const decoded = jwt.verify(authHeader.split(' ')[1], JWT_SECRET);
-      const user = getUserByUsername(decoded.username);
-      if (user) userId = user.id;
-    } catch {}
-  }
+  try {
+    let userId = null;
+    const authHeader = req.headers.authorization;
+    if (authHeader && authHeader.startsWith('Bearer ')) {
+      try {
+        const decoded = jwt.verify(authHeader.split(' ')[1], JWT_SECRET);
+        const user = getUserByUsername(decoded.username);
+        if (user) userId = user.id;
+      } catch {}
+    }
+    trackEvent('page_view', userId, { path: req.path, method: req.method });
+  } catch {}
 
-  trackEvent('page_view', userId, { path: req.path, method: req.method });
   next();
 });
 
diff --git a/backend/services/instagram.js b/backend/services/instagram.js
index cb88455..f494f06 100644
--- a/backend/services/instagram.js
+++ b/backend/services/instagram.js
@@ -1,5 +1,3 @@
-import fetch from 'node-fetch';
-
 const INSTAGRAM_TOKEN = process.env.INSTAGRAM_TOKEN;
 
 export async function getInstagramData(url) {
diff --git a/backend/services/tiktok.js b/backend/services/tiktok.js
index b5800ed..3564f28 100644
--- a/backend/services/tiktok.js
+++ b/backend/services/tiktok.js
@@ -1,5 +1,3 @@
-import fetch from 'node-fetch';
-
 export async function getTikTokData(url) {
   const oembedUrl = `https://www.tiktok.com/oembed?url=${encodeURIComponent(url)}`;
   const response = await fetch(oembedUrl);