fix Analyse

frontend/src/api.js

@@ -82,7 +82,8 @@ async function analyticsFetch(url, token) {
     try { msg = JSON.parse(text).error || msg; } catch {}
     throw new Error(msg);
   }
-  return JSON.parse(text);
+  if (!text) return [];
+  try { return JSON.parse(text); } catch { return []; }
 }
 
 export async function fetchAnalyticsOverview(token) {

frontend/src/pages/Analytics.jsx

@@ -77,16 +77,16 @@ export default function Analytics() {
   const load = async () => {
     try {
       const thirtyDaysAgo = new Date(Date.now() - 30 * 24 * 60 * 60 * 1000).toISOString().slice(0, 10);
-      const [ov, pv, us, act] = await Promise.all([
-        fetchAnalyticsOverview(token),
+      const ov = await fetchAnalyticsOverview(token);
+      setOverview(ov);
+      const [pv, us, act] = await Promise.allSettled([
         fetchAnalyticsPageviews(token, thirtyDaysAgo),
         fetchAnalyticsUsers(token),
         fetchAnalyticsActivity(token),
       ]);
-      setOverview(ov);
-      setPageviews(pv);
-      setUsers(us);
-      setActivity(act);
+      if (pv.status === 'fulfilled') setPageviews(pv.value);
+      if (us.status === 'fulfilled') setUsers(us.value);
+      if (act.status === 'fulfilled') setActivity(act.value);
     } catch (e) {
       console.error('Analytics Fehler:', e);
       setError(e.message);