Fatal error: Uncaught Error: Call to undefined function () in /data/www/ronait.nl/www/wp-includes/class-wp-http-proxy.php:1
Stack trace:
#0 /data/www/ronait.nl/www/wp-settings.php(244): require()
#1 /data/www/ronait.nl/www/wp-config.php(91): require_once('/data/www/ronai...')
#2 /data/www/ronait.nl/www/wp-load.php(50): require_once('/data/www/ronai...')
#3 /data/www/ronait.nl/www/wp-blog-header.php(13): require_once('/data/www/ronai...')
#4 /data/www/ronait.nl/www/index.php(17): require('/data/www/ronai...')
#5 {main}
  thrown in /data/www/ronait.nl/www/wp-includes/class-wp-http-proxy.php on line 1

Fatal error: Uncaught Error: Call to a member function set() on null in /data/www/ronait.nl/www/wp-includes/l10n.php:786
Stack trace:
#0 /data/www/ronait.nl/www/wp-includes/l10n.php(874): load_textdomain()
#1 /data/www/ronait.nl/www/wp-includes/class-wp-fatal-error-handler.php(47): load_default_textdomain()
#2 [internal function]: WP_Fatal_Error_Handler->handle()
#3 {main}
  thrown in /data/www/ronait.nl/www/wp-includes/l10n.php on line 786