Fatal error: Uncaught Error: Class 'Phpml\Tokenization\WordTokenizer' not found in /home/techobi/www/chatbot/vendor/php-ai/php-ml/src/Tokenization/NGramTokenizer.php:9 Stack trace: #0 {main} thrown in /home/techobi/www/chatbot/vendor/php-ai/php-ml/src/Tokenization/NGramTokenizer.php on line 9