Warning: require(/code/wp-includes/version.php): Failed to open stream: No such file or directory in /code/wp-settings.php on line 33

Fatal error: Uncaught Error: Failed opening required '/code/wp-includes/version.php' (include_path='.:/usr/local/lib/php') in /code/wp-settings.php:33 Stack trace: #0 /code/wp-config.php(101): require_once() #1 /code/wp-load.php(50): require_once('/code/wp-config...') #2 /code/wp-blog-header.php(13): require_once('/code/wp-load.p...') #3 /code/index.php(2): require('/code/wp-blog-h...') #4 {main} thrown in /code/wp-settings.php on line 33