diff --git a/dashboard/public/index.html b/dashboard/public/index.html
index d18a719..3ca7308 100644
--- a/dashboard/public/index.html
+++ b/dashboard/public/index.html
@@ -143,9 +143,6 @@
         let isRefreshing = false;
         let refreshInterval = null;
 
-        let isRefreshing = false;
-        let refreshInterval = null;
-
         async function fetchData(skipCharts = false) {
             if (isRefreshing) return; // Verhindere parallele Aufrufe
             isRefreshing = true;
@@ -191,14 +188,24 @@
         }
 
         function showView(viewId) {
+            if (!viewId) viewId = 'dashboard'; // Default zu dashboard
             window.activeView = viewId;
             document.querySelectorAll('.view').forEach(v => v.classList.add('hidden'));
-            document.getElementById(`view-${viewId}`).classList.remove('hidden');
+            const targetView = document.getElementById(`view-${viewId}`);
+            if (targetView) {
+                targetView.classList.remove('hidden');
+            }
             document.querySelectorAll('#sidebar a').forEach(a => a.classList.remove('active-nav'));
-            document.getElementById(`nav-${viewId}`).classList.add('active-nav');
+            const targetNav = document.getElementById(`nav-${viewId}`);
+            if (targetNav) {
+                targetNav.classList.add('active-nav');
+            }
             
             const titles = { 'dashboard': 'Market Overview', 'custom-analytics': 'Custom Analytics' };
-            document.getElementById('pageTitle').innerText = titles[viewId] || 'Dashboard';
+            const pageTitle = document.getElementById('pageTitle');
+            if (pageTitle) {
+                pageTitle.innerText = titles[viewId] || 'Dashboard';
+            }
             
             updateUrlParams();
         }
@@ -764,6 +771,9 @@
                 document.getElementById('customDateFrom').value = thirtyDaysAgo.toISOString().split('T')[0];
             }
             
+            // Initialisiere Dashboard-View
+            showView('dashboard');
+            
             await fetchData(); 
             loadFromUrlParams();