get_current_theme Deprecated Error

Hello! The plugin is giving this error right now. It suddenly started. It was working fine.

Btw, only appears when Debug mode is on. I was testing and it was appearing constantly.

[19-Jul-2015 19:34:16 UTC] PHP Notice: get_current_theme is deprecated since version 3.4! Use wp_get_theme() instead. in wordpress\path\wp-includes\functions.php on line 3391

[19-Jul-2015 19:34:16 UTC] PHP Stack trace:

[19-Jul-2015 19:34:16 UTC] PHP 1. {main}() wordpress\path\wp-admin\plugins.php:0

[19-Jul-2015 19:34:16 UTC] PHP 2. require_once() wordpress\path\wp-admin\plugins.php:10

[19-Jul-2015 19:34:16 UTC] PHP 3. require_once() wordpress\path\wp-admin\admin.php:31

[19-Jul-2015 19:34:16 UTC] PHP 4. require_once() wordpress\path\wp-load.php:37

[19-Jul-2015 19:34:16 UTC] PHP 5. require_once() wordpress\path\wp-config.php:154

[19-Jul-2015 19:34:16 UTC] PHP 6. include_once() wordpress\path\wp-settings.php:215

[19-Jul-2015 19:34:16 UTC] PHP 7. BNFW::factory() wordpress\path\wp-content\plugins\bnfw\bnfw.php:407

[19-Jul-2015 19:34:16 UTC] PHP 8. BNFW->__construct() wordpress\path\wp-content\plugins\bnfw\bnfw.php:55

[19-Jul-2015 19:34:16 UTC] PHP 9. BNFW->hooks() wordpress\path\wp-content\plugins\bnfw\bnfw.php:39

[19-Jul-2015 19:34:16 UTC] PHP 10. get_current_theme() wordpress\path\wp-content\plugins\bnfw\bnfw.php:97

[19-Jul-2015 19:34:16 UTC] PHP 11. _deprecated_function() wordpress\path\wp-includes\deprecated.php:2976

[19-Jul-2015 19:34:16 UTC] PHP 12. trigger_error() wordpress\path\wp-includes\functions.php:3391

https://wordpress.org/plugins/bnfw/