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 {*{if $category.description && $category.description != ''}*}
        {*<div class="block-category card card-block">*}
            {*<div id="category-description" class="text-mute">{$category.description nofilter}</div>*}
        {*</div>*}
    {*{/if}*}

zamień na

 {if $category.description && $category.description != ''}
        <div class="block-category card card-block">
            <div id="category-description" class="text-mute">{$category.description nofilter}</div>
        </div>
 {/if}