WooCommerce Bookings - Fatal Error on Booking Cancellation

Overview of the issue

A fatal error occurs when canceling a booking in WooCommerce Bookings if the booking resource is not translated:

Uncaught Error: Call to a member function get_resource_label() on null in .../wp-content/plugins/woocommerce-bookings/templates/emails/customer-booking-cancelled.php:49

Workaround

Please, make sure of having a full site backup of your site before proceeding.

• Open …/wp-content/plugins/woocommerce-multilingual/compatibility/WcBookings/class-wcml-bookings.php file.
• Look for line 937.
• Replace:

  		if ( $booking_product_id ) {
  			$trnsl_booking_product_id = apply_filters( 'translate_object_id', $booking_product_id, 'product', false, $language );
  			if ( is_null( $trnsl_booking_product_id ) ) {
  				$trnsl_booking_product_id = '';
  			}
  		}
  

• With:

  		if ( $booking_product_id ) {
  			$trnsl_booking_product_id = apply_filters( 'translate_object_id', $booking_product_id, 'product', false, $language );
  			if ( is_null( $trnsl_booking_product_id ) ) {
  				$trnsl_booking_product_id = $booking_product_id;
  			}
  		}
  

• Then, look for line 956.
• Replace:

  			if ( is_null( $trnsl_booking_resource_id ) ) {
  				$trnsl_booking_resource_id = '';
  			}
  

• With:

  			if ( is_null( $trnsl_booking_resource_id ) ) {
  				$trnsl_booking_resource_id = $booking_resource_id;
  			}