Fixed config

gatsby-config.js

@@ -3,6 +3,14 @@
  */
 
 module.exports = {
+  siteMetadata: {
+    title: `Urban Brothers Website`,
+    siteURL: `https://urbanbrothers.de`,
+    description: `Homepage of the Urban Brothers`,
+  },
+  // pathPrefix: ``, // URL prefix of the whole site
+  plugins: [
+    {
       resolve: `gatsby-plugin-manifest`,
       options: {
         name: `Urban Brothers Homepage`,
@@ -15,10 +23,6 @@ module.exports = {
         display: `standalone`,
         icon: `src/images/icon.png`, // This path is relative to the root of the site.
       },
-  siteMetadata: {
-    title: `Urban Brothers Website`,
-    siteURL: `https://urbanbrothers.de`,
-    description: `Homepage of the Urban Brothers`,
     },
-  // pathPrefix: ``, // URL prefix of the whole site
+  ],
 }