Plugin causes fatal error on 4.6 install

The following errors occurred when I tired to install the plugin on a WordPress 4.6 install.

Specific information about the exact install has been removed and replaced with “site” for privacy.

Notice: Undefined offset: 0 in /home/site/public_html/wp-content/plugins/dashboard-widget-sidebar/dashboard-widget-sidebar.php on line 90

Notice: Undefined offset: 0 in /home/site/public_html/wp-content/plugins/dashboard-widget-sidebar/dashboard-widget-sidebar.php on line 93

Fatal error: Uncaught Error: Call to a member function get_settings() on string in /home/site/public_html/wp-content/plugins/dashboard-widget-sidebar/dashboard-widget-sidebar.php:96 Stack trace: #0 /home/site/public_html/wp-includes/plugin.php(524): dws_add_dashboard_widgets('') #1 /home/site/public_html/wp-admin/includes/dashboard.php(99): do_action('wp_dashboard_se...') #2 /home/site/public_html/wp-admin/index.php(15): wp_dashboard_setup() #3 {main} thrown in /home/site/public_html/wp-content/plugins/dashboard-widget-sidebar/dashboard-widget-sidebar.php on line 96