Images from content showing error

{article} 

<ul class="uk-list uk-list-divider">

{if image-1}
<li><a href="[image-1:url]">[image-1:alt]</a></li>
{/if} {if image-2}
<li><a href="[image-2:url]">[image-2:alt]</a></li>
{/if} {if image-3}
<li><a href="[image-3:url]">[image-3:alt]</a></li>
{/if} {if image-4}
<li><a href="[image-4:url]">[image-4:alt]</a></li>
{/if} {if image-5}
<li><a href="[image-5:url]">[image-5:alt]</a></li>
{/if} {if image-6}
<li><a href="[image-6:url]">[image-6:alt]</a></li>
{/if} {if image-7}
<li><a href="[image-7:url]">[image-7:alt]</a></li>
{/if} {if image-8}
<li><a href="[image-8:url]">[image-8:alt]</a></li>
{/if} {if image-9}
<li><a href="[image-9:url]">[image-9:alt]</a></li>
{/if}

</ul>

{/article}