Error rendering macro ToC - duplicate class

[Paul Connaghan]

Hi there,

I am working with a client who has no confluence admin / owner currently that is technical enough to look into where the Confluence Server 5.3 is hosted (i am working on finding people though and getting some admin rights assigned).

I was updating pages with a bit of HTML with style and div html tags (for a header toolbar) and several (but not all) ToC Macro's seem to have broke with a duplicate class error. 

After spending much time, and trying to resolve this issue several times through different approaches I am no further forward. Can anyone recommend a solution I have copied the code from my HTML Include macro below (the links have been changed to protect client identity). I seen some people having similar exceptions copy the duplicate html classes but when I inspect the code I only get the error message, so not sure how to obtain that detail? 

Any help or suggestions greatly appreciated! 

Paul

Error: 

Error rendering macro 'toc' : [com.ctc.wstx.exc.WstxLazyException] com.ctc.wstx.exc.WstxParsingException: Duplicate attribute 'class'. at [row,col {unknown-source}]:

<style>
ul.menu {
    list-style-type: none;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-color: #00877c;
}

li.menu-float {
    float: left;
}

li.menuItem a {
    display: block;
    color: white;
	font-size: 24px;
    text-align: center;
    padding: 25px 20px;
    text-decoration: none;
}

a.menu-link {
	color: white;
}
/* Change the link color to #111 (black) on hover */

li.menuItem a:hover {
    background-color: #005293;
}
 
li.menuItem a:active {
    background-color: #4CAF50;
}
</style>

 <div>
<img src="download/attachments/43188283/Small%20Logo.png">
 </div>
 
<div>
<ul class="menu">
<li style="float:right;font-size:24px;color:white;padding: 25px 20px;"><form class="search" method="POST" action="/plugins/pagetreesearch/pagetreesearch.action" class="aui" name="pagetreesearchform">Search
            <input type="hidden" name="ancestorId" value="43188283">
            <input type="hidden" name="spaceKey" value="somespace">
            <input style="height:30px;font-size:24px;" type="text" class="text medium-field" size="20" name="queryString">
            <input style="border:none;background-color:4CAF50;" class="aui-button" type="submit"  value="Search">
        </form></li>
</ul>
<ul class="menu">
  <li class="menuItem menu-float"><a style="color:white" href="/1">Home</a></li>
  <li class="menuItem menu-float"><a style="color:white" href="/2">Process</a></li>
  <li class="menuItem menu-float"><a style="color:white" href="/3">Screens</a></li>
  <li class="menuItem menu-float"><a style="color:white" href="/6">Policy</a></li>
  <li class="menuItem menu-float"><a style="color:white" href="/#">Rules</a></li>
  <li class="menuItem menu-float"><a style="color:white" href="Interfaces">Interfaces</a></li>
</ul>
</div>

[Fabian Lim]

Hi Paul,

This looks an known issue as stated here: https://jira.atlassian.com/browse/CONFSERVER-53138

and there is a workaround posted.

Regards