How to Fix “Breadcrumbs issues detected” in Google Search Console

Since of April 6, 2020, Google bots will no longer accept data-vocubulary.org markup in your html pages, include Blogger/blogspot platfrom.

The solutions is, if you’re using the data-vocubilary.org now, you should use the markup described on schema.org.

Data-vocubulary.org markup on Blogger look like this:

 <b:includable id='breadcrumb' var='posts'>
<b:if cond='data:blog.homepageUrl != data:blog.url'>
<b:if cond='data:blog.pageType == &quot;static_page&quot;'>
<div class='breadcrumbs' id='breadcrumbs'><span class='breadlabel'><data:blog.pageName/></span></div>
<b:else/>
<b:if cond='data:blog.pageType == &quot;item&quot;'>
<!-- breadcrumb for the post page -->
<b:loop values='data:posts' var='post'>
<b:if cond='data:post.labels'>
<div class='breadcrumbs' id='breadcrumbs' xmlns:v='http://rdf.data-vocabulary.org/#'>
<span class='breadhome' typeof='v:Breadcrumb'><a expr:href='data:blog.homepageUrl' property='v:title' rel='v:url'>Home</a></span>
<b:loop values='data:post.labels' var='label'>
  <span class='breadlabel' typeof='v:Breadcrumb'><a expr:href='data:label.url' property='v:title' rel='v:url'><data:label.name/></a></span></b:loop>
</div>
<b:else/>
<div class='breadcrumbs'><span class='breadhome'><a expr:href='data:blog.homepageUrl' rel='tag'>Home</a></span><span class='breadlabel'>Unlabelled</span><span class='breadlabel'><data:post.title/></span></div>
</b:if>
</b:loop>
<b:else/>
<b:if cond='data:blog.pageType == &quot;archive&quot;'>
<!-- breadcrumb for the label archive page and search pages.. -->
<div class='breadcrumbs' id='breadcrumbs'>
  <span class='breadhome'><a expr:href='data:blog.homepageUrl'>Home</a></span><span>Archives for <data:blog.pageName/></span>
</div>
<b:else/>
<b:if cond='data:blog.pageType == &quot;index&quot;'>
<div class='breadcrumbs' id='breadcrumbs'>
<b:if cond='data:blog.pageName == &quot;&quot;'>
  <span class='breadhome'><a expr:href='data:blog.homepageUrl'>Home</a></span><span class='breadlabel'>All posts </span>
<b:else/>
  <span class='breadhome'><a expr:href='data:blog.homepageUrl'>Home</a></span><span class='breadlabel'>Posts filed under <data:blog.pageName/></span>
</b:if>
</div>
</b:if>
</b:if>
</b:if>
</b:if>
</b:if>
</b:includable>

How to Fix Breadcrumbs Issues on Blogger/blogspot

Login to Blogger dashboard, open Edit HTML, find and replace following code:

<b:includable id='breadcrumb' var='posts'>…</b:includable>

With this:

    <b:includable id='breadcrumb' var='posts'>
<b:if cond='data:view.isSingleItem'>
<b:loop values='data:posts' var='post'>
<b:if cond='data:post.labels'>
<div class='breadcrumbs' itemscope='itemscope' itemtype='https://schema.org/BreadcrumbList'>
<span itemprop='itemListElement' itemscope='itemscope' itemtype='https://schema.org/ListItem'>
<a class='breadhome post-hidden' expr:href='data:blog.homepageUrl' itemprop='item' title='Home'>
<span itemprop='name'>Home</span></a>
<meta content='1' itemprop='position'/>
</span>

<b:loop index='num' values='data:post.labels' var='label'>
<span itemprop='itemListElement' itemscope='itemscope' itemtype='https://schema.org/ListItem'>
<a expr:href='data:label.url + &quot;?&amp;max-results=10&quot;' expr:title='data:label.name' itemprop='item'>
<span itemprop='name'><data:label.name/></span>
</a>
<meta expr:content='data:num+2' itemprop='position'/>
</span>
</b:loop>
<span class='post-hidden'><data:post.title/></span>
</div>
</b:if>
</b:loop>

<b:elseif cond='data:view.search.query or data:view.search.label'/>
	<div class='breadcrumbs' itemscope='itemscope' itemtype='https://schema.org/BreadcrumbList'>
		<span itemprop='itemListElement' itemscope='itemscope' itemtype='https://schema.org/ListItem'>
		<a expr:href='data:blog.homepageUrl' itemprop='item' title='Home'>
		<meta content='1' itemprop='position'/>
		<span itemprop='name'><b:message name='messages.home'/></span></a>
		</span>
		  <span class='title-breadcrumb-post'><data:view.search.resultsMessage/></span>
	</div>

<b:elseif cond='data:view.search and !data:view.search.label and !data:view.search.query'/>
	<div class='breadcrumbs' itemscope='itemscope' itemtype='https://schema.org/BreadcrumbList'>
		<span itemprop='itemListElement' itemscope='itemscope' itemtype='https://schema.org/ListItem'>
		<a expr:href='data:blog.homepageUrl' itemprop='item' title='Home'>
		<meta content='1' itemprop='position'/>
		<span itemprop='name'><b:message name='messages.home'/></span></a>
		</span>
		  <span class='title-breadcrumb-post'><data:messages.morePosts/> <data:messages.at/> <data:blog.title/></span>
	</div>
	
<b:elseif cond='data:view.isArchive'/>
	<div class='breadcrumbs' itemscope='itemscope' itemtype='https://schema.org/BreadcrumbList'>
		<span itemprop='itemListElement' itemscope='itemscope' itemtype='https://schema.org/ListItem'>
		<a expr:href='data:blog.homepageUrl' itemprop='item' title='Home'>
		<meta content='1' itemprop='position'/>
		<span itemprop='name'><b:message name='messages.home'/></span></a>
		</span>
		  <span class='title-breadcrumb-post'><data:view.archive.rangeMessage/></span>
	</div>
</b:if>
</b:includable>

Save theme.

Other Solution

You can try to adding new JSON-LD format, to your Blogger meta tag (in Body).

<script type='application/ld+json'>
{
  "@context": "https://schema.org",
  "@type": "BreadcrumbList",
  "itemListElement": [
    {
      "@type": "ListItem",
      "position": 1,
      "name": "Home",
      "item": "<data:blog.homepageUrl.canonical/>"
    <b:if cond='!data:post.labels'>}<b:else/>},<b:loop index='i' values='data:post.labels' var='label'>
    {
      "@type": "ListItem",
      "position": <b:with value='data:i + 2' var='num'><b:eval expr='data:num'/></b:with>,
      "name": "<data:label.name/>",
      "item": "<data:label.url.canonical/>"
      <b:if cond='data:post.labels.size != data:i + 1'>},<b:else/>}
      </b:if>
      </b:loop>
      </b:if>
  ]
}</script>

Source