$cats = get_categories(array('hide_empty' => 0,'taxonomy' => 'bwl-knowledge-base'));
        var_dump($cats);
        foreach( $cats as $cat ) { ?>
            <input type="checkbox" name="acpwd_settings_options[impacted_categories][]" value="<?php echo $cat->cat_ID ?>"<?php if (in_array($cat->cat_ID, $impacted_categories)) echo ' checked'; ?> /> <?php echo $cat->cat_name ?><br>
        <?php } ?>