Undefined variable: BCC

Hello,

I get the following error when sending emails notifications from Gravity Forms with bcc :

Notice: Undefined variable: bcc in /Users/username/Workspace/wp-content/plugins/wpmandrill/wpmandrill.php on line 1752
Call Stack
# Time Memory Function Location
1 0.0013 263464 {main}( ) …/index.php:0
2 0.0014 263928 require( ‘/Users/username/Workspace/wp-blog-header.php’ ) …/index.php:17
3 0.2880 8410312 wp( ) …/wp-blog-header.php:14
4 0.2880 8410576 WP->main( ) …/functions.php:952
5 0.2977 8572960 do_action_ref_array( ) …/class-wp.php:692
6 0.2977 8574008 call_user_func_array:{/Users/username/Workspace/wp-includes/plugin.php:601} ( ) …/plugin.php:601
7 0.2977 8574184 GFForms::maybe_process_form( ) …/plugin.php:601
8 0.2981 8579152 GFFormDisplay::process_form( ) …/gravityforms.php:309
9 0.3060 8711520 GFFormDisplay::handle_submission( ) …/form_display.php:126
10 1.5813 8848216 GFCommon::send_form_submission_notifications( ) …/form_display.php:1134
11 1.5813 8848288 GFAPI::send_notifications( ) …/common.php:1597
12 1.5814 8848848 GFCommon::send_notifications( ) …/api.php:1253
13 1.5814 8849424 GFCommon::send_notification( ) …/common.php:1591
14 1.6020 8822424 GFCommon::send_email( ) …/common.php:1545
15 1.6023 8829448 wp_mail( ) …/common.php:1708
16 1.6023 8829592 wpMandrill::mail( ) …/wpmandrill.php:65
17 1.6025 8848640 wpMandrill::sendEmail( ) …/wpmandrill.php:1668

It looks like this closed topic deals with the very same bug : https://wordpress.org/support/topic/bug-undefined-variable-bcc?replies=1

Any help is welcomed,

Thanks !

https://wordpress.org/plugins/wpmandrill/