Warning: require(/customers/0/9/1/hunsel.nl/httpd.www/wp-includes/version.php): Failed to open stream: No such file or directory in /customers/0/9/1/hunsel.nl/httpd.www/wp-settings.php on line 34

Fatal error: Uncaught Error: Failed opening required '/customers/0/9/1/hunsel.nl/httpd.www/wp-includes/version.php' (include_path='.:/usr/share/php') in /customers/0/9/1/hunsel.nl/httpd.www/wp-settings.php:34
Stack trace:
#0 /customers/0/9/1/hunsel.nl/httpd.www/wp-config.php(93): require_once()
#1 /customers/0/9/1/hunsel.nl/httpd.www/wp-load.php(50): require_once('/customers/0/9/...')
#2 /customers/0/9/1/hunsel.nl/httpd.www/wp-blog-header.php(13): require_once('/customers/0/9/...')
#3 /customers/0/9/1/hunsel.nl/httpd.www/index.php(17): require('/customers/0/9/...')
#4 {main}
  thrown in /customers/0/9/1/hunsel.nl/httpd.www/wp-settings.php on line 34