Fatal error: Cannot redeclare class SiteOrigin_Widget_Button

Hi – hoping someone can assist, I can no longer login to my wp-admin and when launching my website this message appears ‘Fatal error: Cannot redeclare class SiteOrigin_Widget_Button_Widget in /home/janse497/public_html/wp-content/plugins/so-widgets-bundle/widgets/so-button-widget/so-button-widget.php on line 268’