Hi

On a localserver with a current joomla installation i have this error-message:
Notice: Undefined property: PlgSystemAmpzHelper::$_emailSubject in M:\XAMPPSERVER\xampp_111\htdocs\xx_testbiotech\plugins\system\ampz\helper.php on line 234

And second question..
I'm new with opengraph configuration. But is there a possiblility to exclude some content in the facebook preview?
I have images with caption, but i don't need the caption text in the facbooke preview.
Is there a solution?

Thank you
Christoph