Headless Wordpress Theme
Not too much going on right now, the main thing is the plugins that you add to work with this theme:
+----------------------------------+----------+-----------+---------+
| acf-to-rest-api-master | active | none | 3.1.0 |
| acf-to-rest-api-recursive-master | active | none | 1.0.0 |
| advanced-custom-fields-pro | active | none | 5.7.9 |
| better-rest-api-featured-images | active | none | 1.2.1 |
| classic-editor | active | none | 1.3 |
| easy-wp-smtp | inactive | none | 1.3.7 |
| github-updater | active | available | 8.6.0 |
| post-duplicator | active | none | 2.20 |
| svg-support | active | none | 2.3.15 |
| wp-mailfrom-ii | active | none | 1.1 |
| wp-migrate-db-pro | active | none | 1.9.2 |
| wp-migrate-db-pro-media-files | active | none | 1.4.12 |
| wp-retina-2x | active | none | 5.5.1 |
| wp-security-audit-log | active | none | 3.3.0.2 |
| wp-migrate-db-pro-compatibility | must-use | none | 1.2 |
+----------------------------------+----------+-----------+---------+
If you want to be able to access ACF relationship field post data, you need to make a change to the acf-to-rest-api-recursive-master plugin. In the plugin.php file, change the hook to wp_loaded. Don't know why