Add required options for static build

src/routes/+layout.ts

@@ -0,0 +1,3 @@
+export const prerender = true;
+export const trailingSlash = 'always';
+export const csr = true;

svelte.config.js

@@ -1,6 +1,16 @@
 import adapter from '@sveltejs/adapter-static';
 
 /** @type {import('@sveltejs/kit').Config} */
-const config = { kit: { adapter: adapter() } };
+const config = {
+    kit: {
+        adapter: adapter({
+            pages: 'build',
+            assets: 'build',
+            fallback: 'index.html',
+            precompress: 'true',
+            strict: 'true'
+        })
+    }
+};
 
 export default config;