Fatal error: Uncaught Error: Call to undefined method TokenToMe\TwitterCards\Utils::suffix_for_dev_env() in /home/pubcon/public_html/wp-content/plugins/jm-twitter-cards/admin/Metabox.php:167 Stack trace: #0 /home/pubcon/public_html/wp-includes/class-wp-hook.php(287): TokenToMe\TwitterCards\Admin\Metabox->admin_enqueue_scripts(‘index.php’) #1 /home/pubcon/public_html/wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters(NULL, Array) #2 /home/pubcon/public_html/wp-includes/plugin.php(478): WP_Hook->do_action(Array) #3 /home/pubcon/public_html/wp-admin/admin-header.php(102): do_action(‘admin_enqueue_s…’, ‘index.php’) #4 /home/pubcon/public_html/wp-admin/index.php(111): require_once(‘/home/pubcon/pu…’) #5 {main} thrown in /home/pubcon/public_html/wp-content/plugins/jm-twitter-cards/admin/Metabox.php on line 167