为什么相关的帖子小部件只出现在页脚部分，而没有出现在侧边栏中

我正在为我的Blogger博客使用一个相关的帖子小部件。当我在页脚中安装小部件时，它会正确显示，但当我试图在侧边栏中显示它时，会出现注释——只有一个空白的小部件会出现。

这是我正在使用的代码，为什么小部件没有显示？：

<!--RelatedPostsStarts-->
<script language='JavaScript'>
//<![CDATA[
var relatedTitles = new Array();
var relatedTitlesNum = 0;
var relatedUrls = new Array();
function related_results_labels(json) {
for (var i = 0; i < json.feed.entry.length; i++) {
var entry = json.feed.entry[i];
relatedTitles[relatedTitlesNum] = entry.title.$t;
for (var k = 0; k < entry.link.length; k++) {
if (entry.link[k].rel == 'alternate') {
relatedUrls[relatedTitlesNum] = entry.link[k].href;
relatedTitlesNum++;
break;
}
}
}
}
function removeRelatedDuplicates() {
var tmp = new Array(0);
var tmp2 = new Array(0);
for(var i = 0; i < relatedUrls.length; i++) {
if(!contains(tmp, relatedUrls[i])) {
tmp.length += 1;
tmp[tmp.length - 1] = relatedUrls[i];
tmp2.length += 1;
tmp2[tmp2.length - 1] = relatedTitles[i];
}
}
relatedTitles = tmp2;
relatedUrls = tmp;
}
function contains(a, e) {
for(var j = 0; j < a.length; j++) if (a[j]==e) return true;
return false;
}
function printRelatedLabels() {
var r = Math.floor((relatedTitles.length - 1) * Math.random());
var i = 0;
document.write('<ul>');
while (i < relatedTitles.length && i < 6) {
document.write('<li><a href="' + relatedUrls[r] + '">' + relatedTitles[r] + '</a></li>');
if (r < relatedTitles.length - 1) {
r++;
} else {
r = 0;
}
i++;
}
document.write('</ul>');
}
//]]>
</script>

#related-posts {clear: both;background-color:#000;}
#related-posts ul{margin: 20px 0; padding: 0;list-style: none;}
#related-posts ul li {border-top: 1px solid #333;border-bottom: 1px solid #111;}
#related-posts ul li:first-child {border-top: none;}
#related-posts ul li:last-child {border-bottom: none;}
#related-posts ul li a {padding: 10px;display: block;color: #222;text-decoration: none;cursor: pointer; -webkit-transition: padding-left 250ms ease-out; -moz-transition: padding-left 250ms ease-out; /* trans pattern: property duration timingMethod delay */}
#related-posts ul li a:hover {padding-left: 20px;}

<b:if cond='data:blog.pageType == &quot;item&quot;'>
<div id='related-posts'>
<b:loop values='data:post.labels' var='label'>
<b:if cond='data:label.isLast != &quot;true&quot;'>
</b:if>
<b:if cond='data:blog.pageType == &quot;item&quot;'>
<script expr:src='&quot;/feeds/posts/default/-/&quot; + data:label.name + &quot;?alt=json-in-script&amp;callback=related_results_labels&amp;max-results=5&quot;' type='text/javascript'/>
</b:if>
</b:loop>
<script type='text/javascript'>
var currentposturl=&quot;<data:post.url/>&quot;;
var maxresults=5; // Increase To Show More Then 5 Related Post
removeRelatedDuplicates();
printRelatedLabels();
</script>
</div>
</b:if>