Fatal error: Uncaught TypeError: count(): Argument #1 ($value) must be of type Countable|array, null given in /home/adler/www/test/Classes/PHPExcel/Chart/DataSeries.php:151 Stack trace: #0 /home/adler/www/test/Examples/33chartcreate-composite.php(131): PHPExcel_Chart_DataSeries->__construct() #1 {main} thrown in /home/adler/www/test/Classes/PHPExcel/Chart/DataSeries.php on line 151