( ! ) Fatal error: Class 'Automatic_Upgrader_Skin' not found in C:\wamp64\www\site\wordpress\wp-admin\includes\class-wp-ajax-upgrader-skin.php on line 19
Call Stack
#	Time	Memory	Function	Location
1	0.0002	234216	{main}( )	...\class-wp-ajax-upgrader-skin.php:0