( ! ) Warning: Unsupported declare 'strict_types' in C:\wamp64\www\libs\phpspreadsheet\maennchen\zipstream-php\src\Exception\OverflowException.php on line 2

( ! ) Fatal error: Class 'ZipStream\Exception' not found in C:\wamp64\www\libs\phpspreadsheet\maennchen\zipstream-php\src\Exception\OverflowException.php on line 12
Call Stack
#	Time	Memory	Function	Location
1	0.0501	236216	{main}( )	...\OverflowException.php:0