Plug in Errors

Have had the plugin deactivated until today, I installed latest version (amp for wp, and amp for woocommerce). Now getting the following errors:

Notice: Undefined variable: categories_array in /home/content/p3pnexwpnas12_data02/99/41907099/html/wp-content/plugins/accelerated-mobile-pages/includes/options/admin-config.php on line 5330

Warning: Cannot modify header information – headers already sent by (output started at /home/content/p3pnexwpnas12_data02/99/41907099/html/wp-content/plugins/accelerated-mobile-pages/includes/options/admin-config.php:5330) in /home/content/p3pnexwpnas12_data02/99/41907099/html/wp-admin/includes/misc.php on line 1144

Warning: Cannot modify header information – headers already sent by (output started at /home/content/p3pnexwpnas12_data02/99/41907099/html/wp-content/plugins/accelerated-mobile-pages/includes/options/admin-config.php:5330) in /home/content/p3pnexwpnas12_data02/99/41907099/html/wp-includes/option.php on line 919

Warning: Cannot modify header information – headers already sent by (output started at /home/content/p3pnexwpnas12_data02/99/41907099/html/wp-content/plugins/accelerated-mobile-pages/includes/options/admin-config.php:5330) in /home/content/p3pnexwpnas12_data02/99/41907099/html/wp-includes/option.php on line 920