Unbeatable Tic-Tac-Toe

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Warning: DOMDocument::load(): Document is empty in /usr/local/www/apache24/data/tictactoe/games.xml, line: 1 in /usr/local/www/apache24/data/tictactoe/index.php on line 36

Fatal error: Uncaught Error: Call to a member function getElementsByTagName() on null in /usr/local/www/apache24/data/tictactoe/index.php:38 Stack trace: #0 /usr/local/www/apache24/data/tictactoe/index.php(113): update_element('t8868', 'moves', '_O_XO_XOX') #1 /usr/local/www/apache24/data/tictactoe/index.php(334): generate('_O_XO_XOX', 't8868') #2 {main} thrown in /usr/local/www/apache24/data/tictactoe/index.php on line 38