Fatal error: Uncaught Error: Call to undefined function wp_using_themes() in /var/www/web22437969/html/wp-includes/template-loader.php:7
Stack trace:
#0 /var/www/web22437969/html/wp-blog-header.php(19): require_once()
#1 /var/www/web22437969/html/index.php(76): require('/var/www/web224...')
#2 {main}
thrown in /var/www/web22437969/html/wp-includes/template-loader.php on line 7
Warning: file_get_contents(index.php): failed to open stream: No such file or directory in /var/www/web22437969/html/wp-includes/plugin.php on line 423