( ! ) Fatal error: Class 'Bulk_Upgrader_Skin' not found in C:\wamp64\www\site\wordpress\wp-admin\includes\class-bulk-plugin-upgrader-skin.php on line 18
Call Stack
#	Time	Memory	Function	Location
1	0.0002	233920	{main}( )	...\class-bulk-plugin-upgrader-skin.php:0