Fatal error: Uncaught Error: Call to undefined function wp_embed_register_handler() in /usr/www/users/rnycza/wp-includes/embed.php:205
Stack trace:
#0 /usr/www/users/rnycza/wp-includes/class-wp-hook.php(287): wp_maybe_load_embeds('')
#1 /usr/www/users/rnycza/wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters(NULL, Array)
#2 /usr/www/users/rnycza/wp-includes/plugin.php(484): WP_Hook->do_action(Array)
#3 /usr/www/users/rnycza/wp-settings.php(434): do_action('plugins_loaded')
#4 /usr/www/users/rnycza/wp-config.php(211): require_once('/usr/www/users/...')
#5 /usr/www/users/rnycza/wp-load.php(37): require_once('/usr/www/users/...')
#6 /usr/www/users/rnycza/wp-blog-header.php(13): require_once('/usr/www/users/...')
#7 /usr/www/users/rnycza/index.php(42): require('/usr/www/users/...')
#8 {main}
  thrown in /usr/www/users/rnycza/wp-includes/embed.php on line 205