Class 'A2A_SHARE_SAVE_Widget' not found

Hello,

At the time of clearing the cache site there is an error.

WordPress 4.3.1
AddToAny Share Buttons Version 1.6.7

Previously worked well, the error occurs a couple of weeks ago.

The WP v4.3 + AddToAny v1.6.5 worked well, then i updated to WP v4.3.1 + AddToAny v1.6.6 it has been happen.

CALL STACK
# Function Location
1 WP_Widget_Factory::register() /wp-includes/widgets.php:591
2 WP_Widget_Factory->register(A2A_SHARE_SAVE_Widget) /wp-includes/widgets.php:720
3 register_widget(A2A_SHARE_SAVE_Widget) /wp-content/plugins/add-to-any/add-to-any.php:1117
4 A2A_SHARE_SAVE_widgets_init() :null
5 call_user_func_array(A2A_SHARE_SAVE_widgets_init, Array ([0] => )) /wp-includes/plugin.php:503
6 do_action(widgets_init) /wp-includes/default-widgets.php:1649
7 wp_widgets_init() :null
8 call_user_func_array(wp_widgets_init, Array ([0] => )) /wp-includes/plugin.php:503
9 do_action(init) phar:///opt/wp-cli/wp-cli.phar/php/wp-settings-cli.php:378
10 unknown() phar:///opt/wp-cli/wp-cli.phar/php/WP_CLI/Runner.php:736
11 WP_CLI\Runner->load_wordpress() phar:///opt/wp-cli/wp-cli.phar/php/WP_CLI/Runner.php:697
12 WP_CLI\Runner->start() phar:///opt/wp-cli/wp-cli.phar/php/wp-cli.php:21
13 unknown() phar:///opt/wp-cli/wp-cli.phar/php/boot-phar.php:5
14 unknown() /opt/wp-cli/wp-cli.phar:4

Thanks in advance.

https://www.ads-software.com/plugins/add-to-any/