diff --git a/lib/mdxUtils.ts b/lib/mdxUtils.ts
index 908c5e7..c7de8bd 100644
--- a/lib/mdxUtils.ts
+++ b/lib/mdxUtils.ts
@@ -41,20 +41,21 @@ export function readMarkdownFile(
   slug: string,
   locale: string,
   type?: MARKDOWN_SUBFOLDER_TYPE
-): MarkdownFile {
+): MarkdownFile | undefined {
   const markdownFolderPath = getMarkdownFolderPathByTypeAndLocale(locale, type);
   const markdownFilePathForSlug = fs
     .readdirSync(markdownFolderPath)
-    .filter((file) => file.endsWith('.mdx') || file.endsWith('.md'))
+    .filter((path) => /\.mdx?$/.test(path))
     .find((file) => file.startsWith(slug));
 
-  if (!markdownFilePathForSlug)
-    throw new Error(`No markdown files found for given slug ${slug}`);
+  if (!markdownFilePathForSlug) {
+    return;
+  }
 
   const fullPath = path.join(markdownFolderPath, markdownFilePathForSlug);
 
   if (!fs.existsSync(fullPath)) {
-    throw new Error(`Markdown file not found for path ${path}`);
+    return;
   }
 
   const fileContents = fs.readFileSync(fullPath, 'utf8');
@@ -68,10 +69,15 @@ export function getMarkdownFrontmatterAndContent(
   fields: string[] = [],
   locale: string,
   type?: MARKDOWN_SUBFOLDER_TYPE
-): MarkdownData {
+): MarkdownData | undefined {
   const slug = filePath.replace(/\.mdx?$/, '');
-  const { data, content } = readMarkdownFile(slug, locale, type);
+  const file = readMarkdownFile(slug, locale, type);
+
+  if (!file) {
+    return;
+  }
 
+  const { content, data } = file;
   const markdownData: MarkdownData = {};
   // Ensure only the minimal needed data is exposed
   for (const field of fields) {
@@ -96,8 +102,9 @@ export function getAllMarkdownByDate(
 ): MarkdownData[] {
   const markdownPaths = getMarkdownPathsByTypeAndLocale(locale, type);
   const data = markdownPaths
-    .map((filePath) =>
-      getMarkdownFrontmatterAndContent(filePath, fields, locale, type)
+    .map(
+      (filePath) =>
+        getMarkdownFrontmatterAndContent(filePath, fields, locale, type)!
     )
     .sort((item1, item2) => (item1.date > item2.date ? -1 : 1));
   return data;
@@ -121,5 +128,7 @@ export function getAllMarkdownSlugsForType(
     ?.map((slug) => slug.replace(/\.mdx?$/, ''));
   const uniqueSlugs = [...new Set(slugs)];
 
+  console.log('LOLOL', uniqueSlugs);
+
   return uniqueSlugs;
 }
diff --git a/markdown/en/posts/cheatcheat.md b/markdown/en/posts/cheatsheet.md
similarity index 99%
rename from markdown/en/posts/cheatcheat.md
rename to markdown/en/posts/cheatsheet.md
index 6ce9e44..5ce9663 100644
--- a/markdown/en/posts/cheatcheat.md
+++ b/markdown/en/posts/cheatsheet.md
@@ -1,7 +1,7 @@
 ---
 date: '2021-03-24'
 thumbnail: /assets/test.jpg
-title: Cheatcheat
+title: Cheatsheet
 description: The soup stock from sea kelp and dried bonito flakes can be used in many Japanese food such as miso soup, soba, udon, and stew.
 ---
 
diff --git a/pages/posts/[slug].tsx b/pages/posts/[slug].tsx
index 5cf87cf..e035c68 100644
--- a/pages/posts/[slug].tsx
+++ b/pages/posts/[slug].tsx
@@ -26,12 +26,15 @@ export default SingleBlog;
 SingleBlog.Layout = Layout;
 
 export const getStaticProps: GetStaticProps = async ({ params, locale }) => {
-  const { content, data } = readMarkdownFile(
-    params?.slug as string,
-    locale!,
-    'posts'
-  );
+  const file = readMarkdownFile(params?.slug as string, locale!, 'posts');
+
+  if (!file) {
+    return {
+      notFound: true,
+    };
+  }
 
+  const { content, data } = file;
   const mdxSource = content ? await serialize(content, { scope: data }) : null;
 
   return {
@@ -45,7 +48,6 @@ export const getStaticProps: GetStaticProps = async ({ params, locale }) => {
 
 export const getStaticPaths: GetStaticPaths = async ({ locales }) => {
   const slugs = getAllMarkdownSlugsForType(locales!, 'posts');
-
   const paths = slugs.flatMap((slug) =>
     locales!.map((locale) => ({
       params: {
diff --git a/pages/privacy.tsx b/pages/privacy.tsx
index e82f993..21e1247 100644
--- a/pages/privacy.tsx
+++ b/pages/privacy.tsx
@@ -27,8 +27,15 @@ export default PrivacyPage;
 PrivacyPage.Layout = Layout;
 
 export const getStaticProps: GetStaticProps = async ({ locale }) => {
-  const { content, data } = readMarkdownFile('privacybeleid', locale!);
+  const file = readMarkdownFile('privacybeleid', locale!);
 
+  if (!file) {
+    return {
+      notFound: true,
+    };
+  }
+
+  const { content, data } = file;
   const mdxSource = content ? await serialize(content, { scope: data }) : null;
 
   return {
diff --git a/public/robots.txt b/public/robots.txt
index 48f2646..1a276ce 100644
--- a/public/robots.txt
+++ b/public/robots.txt
@@ -3,7 +3,7 @@ User-agent: *
 Allow: /
 
 # Host
-Host: https://example.com
+Host: 'https://example.com',
 
 # Sitemaps
-Sitemap: https://example.com/sitemap.xml
+Sitemap: 'https://example.com',/sitemap.xml
diff --git a/public/sitemap.xml b/public/sitemap.xml
index 33fe18d..94ab4a4 100644
--- a/public/sitemap.xml
+++ b/public/sitemap.xml
@@ -1,27 +1,39 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:news="http://www.google.com/schemas/sitemap-news/0.9" xmlns:xhtml="http://www.w3.org/1999/xhtml" xmlns:mobile="http://www.google.com/schemas/sitemap-mobile/1.0" xmlns:image="http://www.google.com/schemas/sitemap-image/1.1" xmlns:video="http://www.google.com/schemas/sitemap-video/1.1">
-<url><loc>https://example.com</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-05-26T18:35:09.678Z</lastmod></url>
-<url><loc>https://example.com/500</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-05-26T18:35:09.679Z</lastmod></url>
-<url><loc>https://example.com/blog</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-05-26T18:35:09.679Z</lastmod></url>
-<url><loc>https://example.com/buttons</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-05-26T18:35:09.679Z</lastmod></url>
-<url><loc>https://example.com/formpage</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-05-26T18:35:09.679Z</lastmod></url>
-<url><loc>https://example.com/nl/404</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-05-26T18:35:09.679Z</lastmod></url>
-<url><loc>https://example.com/en/404</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-05-26T18:35:09.679Z</lastmod></url>
-<url><loc>https://example.com/fr/404</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-05-26T18:35:09.679Z</lastmod></url>
-<url><loc>https://example.com/nl</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-05-26T18:35:09.679Z</lastmod></url>
-<url><loc>https://example.com/en</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-05-26T18:35:09.679Z</lastmod></url>
-<url><loc>https://example.com/fr</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-05-26T18:35:09.679Z</lastmod></url>
-<url><loc>https://example.com/nl/500</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-05-26T18:35:09.679Z</lastmod></url>
-<url><loc>https://example.com/en/500</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-05-26T18:35:09.679Z</lastmod></url>
-<url><loc>https://example.com/fr/500</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-05-26T18:35:09.679Z</lastmod></url>
-<url><loc>https://example.com/nl/formpage</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-05-26T18:35:09.679Z</lastmod></url>
-<url><loc>https://example.com/en/formpage</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-05-26T18:35:09.679Z</lastmod></url>
-<url><loc>https://example.com/fr/formpage</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-05-26T18:35:09.679Z</lastmod></url>
-<url><loc>https://example.com/nl/buttons</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-05-26T18:35:09.679Z</lastmod></url>
-<url><loc>https://example.com/en/buttons</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-05-26T18:35:09.679Z</lastmod></url>
-<url><loc>https://example.com/fr/buttons</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-05-26T18:35:09.679Z</lastmod></url>
-<url><loc>https://example.com/nl/blog</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-05-26T18:35:09.679Z</lastmod></url>
-<url><loc>https://example.com/en/blog</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-05-26T18:35:09.679Z</lastmod></url>
-<url><loc>https://example.com/fr/blog</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-05-26T18:35:09.679Z</lastmod></url>
-<url><loc>https://example.com/nl/posts/example</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-05-26T18:35:09.679Z</lastmod></url>
+<url><loc>'https://example.com',</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-12-19T15:20:43.498Z</lastmod></url>
+<url><loc>'https://example.com',/500</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-12-19T15:20:43.498Z</lastmod></url>
+<url><loc>'https://example.com',/blog</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-12-19T15:20:43.498Z</lastmod></url>
+<url><loc>'https://example.com',/buttons</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-12-19T15:20:43.498Z</lastmod></url>
+<url><loc>'https://example.com',/formpage</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-12-19T15:20:43.498Z</lastmod></url>
+<url><loc>'https://example.com',/privacy</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-12-19T15:20:43.498Z</lastmod></url>
+<url><loc>'https://example.com',/nl</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-12-19T15:20:43.498Z</lastmod></url>
+<url><loc>'https://example.com',/en</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-12-19T15:20:43.498Z</lastmod></url>
+<url><loc>'https://example.com',/fr</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-12-19T15:20:43.498Z</lastmod></url>
+<url><loc>'https://example.com',/nl/500</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-12-19T15:20:43.498Z</lastmod></url>
+<url><loc>'https://example.com',/en/500</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-12-19T15:20:43.498Z</lastmod></url>
+<url><loc>'https://example.com',/fr/500</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-12-19T15:20:43.498Z</lastmod></url>
+<url><loc>'https://example.com',/nl/404</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-12-19T15:20:43.498Z</lastmod></url>
+<url><loc>'https://example.com',/en/404</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-12-19T15:20:43.498Z</lastmod></url>
+<url><loc>'https://example.com',/fr/404</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-12-19T15:20:43.498Z</lastmod></url>
+<url><loc>'https://example.com',/nl/formpage</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-12-19T15:20:43.498Z</lastmod></url>
+<url><loc>'https://example.com',/en/formpage</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-12-19T15:20:43.498Z</lastmod></url>
+<url><loc>'https://example.com',/fr/formpage</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-12-19T15:20:43.498Z</lastmod></url>
+<url><loc>'https://example.com',/nl/buttons</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-12-19T15:20:43.498Z</lastmod></url>
+<url><loc>'https://example.com',/en/buttons</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-12-19T15:20:43.498Z</lastmod></url>
+<url><loc>'https://example.com',/fr/buttons</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-12-19T15:20:43.498Z</lastmod></url>
+<url><loc>'https://example.com',/nl/blog</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-12-19T15:20:43.498Z</lastmod></url>
+<url><loc>'https://example.com',/en/blog</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-12-19T15:20:43.498Z</lastmod></url>
+<url><loc>'https://example.com',/fr/blog</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-12-19T15:20:43.498Z</lastmod></url>
+<url><loc>'https://example.com',/nl/privacy</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-12-19T15:20:43.498Z</lastmod></url>
+<url><loc>'https://example.com',/en/privacy</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-12-19T15:20:43.498Z</lastmod></url>
+<url><loc>'https://example.com',/fr/privacy</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-12-19T15:20:43.498Z</lastmod></url>
+<url><loc>'https://example.com',/nl/posts/cheatsheetNL</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-12-19T15:20:43.498Z</lastmod></url>
+<url><loc>'https://example.com',/en/posts/cheatsheetNL</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-12-19T15:20:43.498Z</lastmod></url>
+<url><loc>'https://example.com',/fr/posts/cheatsheetNL</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-12-19T15:20:43.498Z</lastmod></url>
+<url><loc>'https://example.com',/nl/posts/cheatsheet</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-12-19T15:20:43.498Z</lastmod></url>
+<url><loc>'https://example.com',/en/posts/cheatsheet</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-12-19T15:20:43.498Z</lastmod></url>
+<url><loc>'https://example.com',/fr/posts/cheatsheet</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-12-19T15:20:43.498Z</lastmod></url>
+<url><loc>'https://example.com',/nl/posts/cheatsheetFR</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-12-19T15:20:43.498Z</lastmod></url>
+<url><loc>'https://example.com',/en/posts/cheatsheetFR</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-12-19T15:20:43.498Z</lastmod></url>
+<url><loc>'https://example.com',/fr/posts/cheatsheetFR</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2021-12-19T15:20:43.498Z</lastmod></url>
 </urlset>
\ No newline at end of file