Fatal error: Uncaught Error: Interface "PhpOffice\PhpSpreadsheet\IComparable" not found in D:\web\teleflex\tst\assets\phpspreadsheet\RichText\RichText.php:10 Stack trace: #0 {main} thrown in D:\web\teleflex\tst\assets\phpspreadsheet\RichText\RichText.php on line 10