AddCustomColumnOrderPage.php

<?php

add_filter('fluent_cart/orders_table_columns', function($columns){
    
    $columns['title_1'] =[
        'label'    => 'The Custom',
        'accessor' => 'iam_custom',
        'render_template' => true,
        'template' => '<div class="flex gap-2">
        {{data.order?.invoice_no || "--"}}
        
    </div>'
    ];

    return $columns;
});