After you boot up the stack, you'll want to go into your /local/path/nextcloud/config/nextcloud/www/nextcloud/config/config.php file and add the following to the top, immediately below the $CONFIG = array ( line
'memcache.local' => '\OC\Memcache\APCu',
@ -17,4 +18,4 @@ After you boot up the stack, you'll want to go into your /local/path/nextcloud/c