Warning: require(/httpdocs/wp-includes/version.php): Failed to open stream: No such file or directory in /httpdocs/wp-settings.php on line 34

Fatal error: Uncaught Error: Failed opening required '/httpdocs/wp-includes/version.php' (include_path='.:/usr/share/pear') in /httpdocs/wp-settings.php:34 Stack trace: #0 /httpdocs/wp-config.php(102): require_once() #1 /httpdocs/wp-load.php(50): require_once('/httpdocs/wp-co...') #2 /httpdocs/wp-blog-header.php(13): require_once('/httpdocs/wp-lo...') #3 /httpdocs/index.php(17): require('/httpdocs/wp-bl...') #4 {main} thrown in /httpdocs/wp-settings.php on line 34