WPBitly_Admin' does not have a method 'addMetaboxes' #14

Hello, i have some error in my error.log

I use Wordpress latest 4.9.8, Latest version of plugin WP Bitly, PHP 7.0.30

FastCGI sent in stderr: "PHP message: PHP Warning: call_user_func_array() expects parameter 1 to be a valid callback, class 'WPBitly_Admin' does not have a method 'addMetaboxes' in /var/www/example.com/html/wp-includes/class-wp-hook.php on line 286" while reading response header from upstream, client: server: example.com, request: "GET /wp-admin/post.php?post=123&action=edit HTTP/2.0", upstream: "fastcgi://unix:/run/php/php7.0-fpm.sock:", host: "example.com", referrer: "https://example.com/wp-admin/edit.php