Fatal error: Uncaught Error: Class 'Phpml\DimensionReduction\PCA' not found in /home/techobi/www/chatbot/vendor/php-ai/php-ml/src/DimensionReduction/KernelPCA.php:14 Stack trace: #0 {main} thrown in /home/techobi/www/chatbot/vendor/php-ai/php-ml/src/DimensionReduction/KernelPCA.php on line 14