Wordpress SSL Certificate Problem

"An error occurred while updating Product Gallery Advanced: Download failed. SSL peer certificate or SSH remote key was not OK"

This is caused by your server SSL misconfiguration. You can:

1. 1. Contact your server admin to fix it.
2. 2. Or disable WordPress SSL verification by adding to your theme functions.php the following lines of code:

add_filter('https_ssl_verify', '__return_false');
add_filter('https_local_ssl_verify', '__return_false');