diff --git a/src/routes/gruppi/[slug]/+page.svelte b/src/routes/gruppi/[slug]/+page.svelte
index fd9307a..86250cf 100644
--- a/src/routes/gruppi/[slug]/+page.svelte
+++ b/src/routes/gruppi/[slug]/+page.svelte
@@ -5,6 +5,7 @@
 	import { goto } from '$app/navigation';
 	const { data } = $props();
 
+	$inspect(data);
 	const sortedProjects = $derived(
 		data.gruppo.progetti.sort((a, b) => {
 			if (a.modulo < b.modulo) return -1;
@@ -24,12 +25,13 @@
 		);
 	});
 
-	const prevIndex = $derived(currentIndex > 0 ? currentIndex - 1 : data.gruppo.gruppi.length - 1);
-
-	const nextIndex = $derived(currentIndex < data.gruppo.gruppi.length - 1 ? currentIndex + 1 : 0);
+	const prevIndex = $derived(
+		currentIndex > 0 ? currentIndex - 1 : data?.gruppo?.gruppi?.length - 1
+	);
 
-	const prevGroup = $derived(data.gruppo.gruppi[prevIndex]);
-	const nextGroup = $derived(data.gruppo.gruppi[nextIndex]);
+	const nextIndex = $derived(
+		currentIndex < data?.gruppo?.gruppi?.length - 1 ? currentIndex + 1 : 0
+	);
 </script>
 
 {#if data.gruppo}
diff --git a/svelte.config.js b/svelte.config.js
index 325dfee..1142343 100644
--- a/svelte.config.js
+++ b/svelte.config.js
@@ -4,7 +4,11 @@ import adapter from '@sveltejs/adapter-static';
 const config = {
 	kit: {
 		adapter: adapter({
-			fallback: '404.html'
+			fallback: '404.html',
+			pages: 'build',
+			assets: 'build',
+			precompress: false,
+			strict: true
 		}),
 		paths: {
 			base: process.argv.includes('dev') ? '' : process.env.PUBLIC_BASE_PATH