Opal Hotel Favorited

Fatal error: Uncaught Error: Call to undefined function opalhotel_print_notice() in /home/customer/www/bellbunya.org.au/public_html/wp-content/plugins/opal-hotel-room-booking/includes/class-opalhotel-shortcodes.php:972 Stack trace: #0 /home/customer/www/bellbunya.org.au/public_html/wp-includes/shortcodes.php(395): OpalHotel_Shortcodes::favorited('', '', 'opalhotel_favor...') #1 [internal function]: do_shortcode_tag(Array) #2 /home/customer/www/bellbunya.org.au/public_html/wp-includes/shortcodes.php(235): preg_replace_callback('/\\[(\\[?)(opalho...', 'do_shortcode_ta...', '[opalhotel_favo...') #3 /home/customer/www/bellbunya.org.au/public_html/wp-includes/class-wp-hook.php(310): do_shortcode('[opalhotel_favo...') #4 /home/customer/www/bellbunya.org.au/public_html/wp-includes/plugin.php(205): WP_Hook->apply_filters('[opalhotel_favo...', Array) #5 /home/customer/www/bellbunya.org.au/public_html/wp-includes/post-template.php(256): apply_filters('the_content', '[opalhotel_favo...') #6 /home/customer/www/bellbunya.org.au/public in /home/customer/www/bellbunya.org.au/public_html/wp-content/plugins/opal-hotel-room-booking/includes/class-opalhotel-shortcodes.php on line 972