Bitte nochmal machen

src/pages/EventDetail.jsx

@@ -33,6 +33,10 @@ function resolveImageUrl(value, fallback) {
     if (apiBaseUrl) {
       return `${apiBaseUrl}${path}`
     }
+    // Fallback to current domain if no API base URL is set
+    if (typeof window !== 'undefined') {
+      return `${window.location.origin}${path}`
+    }
     return path
   }
   return fallback

src/pages/admin/AdminEventForm.jsx

@@ -15,6 +15,10 @@ function resolveImageUrl(value) {
   if (apiBaseUrl) {
     return `${apiBaseUrl}${path}`
   }
+  // Fallback to current domain if no API base URL is set
+  if (typeof window !== 'undefined') {
+    return `${window.location.origin}${path}`
+  }
   return path
 }