If you want to display your own logo image instead of WP Travel logo image as placeholder so that when you don’t upload the image through gallery section your own logo image will be displayed then WP Travel plugin provides the feature regarding replacing WP Travel logo image with new one as placeholder image using filter code.

To replace WP Travel logo image with new one as placeholder image, you have to add following given code in  functions.php file of your child theme.

function wp_travel_customized_placeholder_url( $url ) {
    return 'http://wp-travel.test/wp-content/uploads/2021/07/company-name.png';
}
add_filter( 'wp_travel_placeholder_image_url', 'wp_travel_customized_placeholder_url' );

For detail assistance regarding creating child theme, please refer link.

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