Error While Booking

PHP Fatal error: Uncaught Error: Cannot use string offset as an array in /home/web/www.falardesign.it/www/vissani2025/wp-content/plugins/wp-hotel-booking/includes/booking/class-wphb-booking.php:418 #0 /home/web/www.falardesign.it/www/vissani2025/wp-content/plugins/wp-hotel-booking/includes/class-wphb-checkout.php(89): WPHB_Booking->update_room_booking(60598) #1 /home/web/www.falardesign.it/www/vissani2025/wp-content/plugins/wp-hotel-booking/includes/class-wphb-checkout.php(119): WPHB_Checkout->create_booking() #2 /home/web/www.falardesign.it/www/vissani2025/wp-content/plugins/wp-hotel-booking/includes/wphb-functions.php(1244): WPHB_Checkout->process_checkout() #3 /home/web/www.falardesign.it/www/vissani2025/wp-content/plugins/wp-hotel-booking/includes/class-wphb-ajax.php(226): hb_customer_place_order() #4 /home/web/www.falardesign.it/www/vissani2025/wp-includes/class-wp-hook.php(324): WPHB_Ajax::place_order(”) #5 /home/web/www.falardesign.it/www/vissani2025/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(”, Array) #6 /home/web/www.falardesign.it/www/vissani2025/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #7 /home/web/www.falardesign.it/www/vissani2025/wp-admin/admin-ajax.php(192): do_action(‘wp_ajax_hotel_b…’) #8 {main} thrown in /home/web/www.falardesign.it/www/vissani2025/wp-content/plugins/wp-hotel-booking/includes/booking/class-wphb-booking.php on line 418

Here is error log while booking room