Fatal error: Uncaught Error: Class 'LinearScale' not found in E:\xampp\htdocs\teacher2\m\inc\class\jpgraph\jpgraph_log.php:19
Stack trace:
#0 E:\xampp\htdocs\teacher2\m\inc\class\jpgraph\jpgraph_polar.php(13): require_once()
#1 {main}
thrown in E:\xampp\htdocs\teacher2\m\inc\class\jpgraph\jpgraph_log.php on line 19