Uncaught Error: Call to undefined function remote_file_size()
in /home/clients/fda89114f6f1f71825555d5b01873ad6/sites/rouge.ch/wp-content/themes/Extra-rouge-child/functions.php on line 306

Call stack:

1. change_rss_feed('')
   wp-includes/class-wp-hook.php:324
2. WP_Hook::apply_filters(NULL, array)
   wp-includes/class-wp-hook.php:348
3. WP_Hook::do_action(array)
   wp-includes/plugin.php:517
4. do_action('rss2_item')
   wp-includes/feed-rss2.php:125
5. require_once('/home/clients/fda891...cludes/feed-rss2.php')
   wp-includes/template.php:810
6. load_template('/home/clients/fda891...cludes/feed-rss2.php')
   wp-includes/functions.php:1678
7. do_feed_rss2(false)
   wp-includes/class-wp-hook.php:326
8. WP_Hook::apply_filters('', array)
   wp-includes/class-wp-hook.php:348
9. WP_Hook::do_action(array)
   wp-includes/plugin.php:517
10. do_action('do_feed_rss2', false, 'rss2')
    wp-includes/functions.php:1640
11. do_feed()
    wp-includes/template-loader.php:48
12. require_once('/home/clients/fda891.../template-loader.php')
    wp-blog-header.php:19
13. require('/home/clients/fda891...h/wp-blog-header.php')
    index.php:17