( ! ) Fatal error: Class 'HTMLPurifier_AttrDef' not found in C:\wamp64\www\libs\phpspreadsheet\ezyang\htmlpurifier\library\HTMLPurifier\AttrDef\CSS.php on line 15
Call Stack
#	Time	Memory	Function	Location
1	0.0033	254400	{main}( )	...\CSS.php:0