update 404 to match updated acf settings and slug

Author: gregrickaby

api/wordpress/pages/queryError404Page.js

@@ -1,14 +1,14 @@
 import {gql} from '@apollo/client'
-import {singlePageFragment} from './queryPageById'
 import defaultPageData from '../_partials/defaultPageData'
+import {singlePageFragment} from './queryPageById'
 
 // Query: retrieve 404 error page.
 const queryError404Page = gql`
   query GET_ERROR_404_PAGE($imageSize: MediaItemSizeEnum = LARGE) {
     ${defaultPageData}
-    additionalSettings {
+    headlessConfig {
       additionalSettings {
-        page: error404Page {
+        error404Page {
           ... on Page {
             ...SinglePageFields
           }

pages/404.js

@@ -1,8 +1,8 @@
 import getPostTypeStaticProps from '@/api/wordpress/_global/getPostTypeStaticProps'
+import Container from '@/components/atoms/Container'
 import Layout from '@/components/common/Layout'
 import getPagePropTypes from '@/functions/getPagePropTypes'
 import Page from './[...slug]'
-import Container from '@/components/atoms/Container'
 
 // Define route post type.
 const postType = 'page'
@@ -46,7 +46,7 @@ export default function Custom404({post}) {
  * @return {object} Post props.
  */
 export async function getStaticProps() {
-  return await getPostTypeStaticProps({slug: '404'}, postType)
+  return await getPostTypeStaticProps({slug: '404-not-found'}, postType)
 }
 
 Custom404.propTypes = {