( ! ) Fatal error: Interface 'PhpOffice\PhpSpreadsheet\IComparable' not found in C:\wamp64\www\cportal\vendor\phpoffice\phpspreadsheet\src\PhpSpreadsheet\Worksheet\Worksheet.php on line 28
Call Stack
#	Time	Memory	Function	Location
1	0.0005	413848	{main}( )	...\Worksheet.php:0