Fatal error: Uncaught Error: syntax error, unexpected identifier "add_action"
in /srv/users/brugte-website/apps/brugte-website/public/wp-content/themes/flatsome-child/class/sellers/class-seller-controller.php on line 18

Call stack:

1. include()
   wp-settings.php:672
2. require_once('/srv/users/brugte-we...blic/wp-settings.php')
   wp-config.php:108
3. require_once('/srv/users/brugte-we...public/wp-config.php')
   wp-load.php:50
4. require_once('/srv/users/brugte-we...e/public/wp-load.php')
   wp-blog-header.php:13
5. require('/srv/users/brugte-we...c/wp-blog-header.php')
   index.php:17