Show full blog post in Contempo theme

Replace this in theme (edit HTML)

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<b:if cond='data:view.isSingleItem'>     <b:include data='post' name='postBody'/> <b:else/>     <b:include data='post' name='postBodySnippet'/>     <b:include data='post' name='postJumpLink'/> </b:if>

With this

<b:if cond='data:view.isSingleItem'>

    <b:include data='post' name='postBody'/>

<b:else/>

    <b:include data='post' name='postBody'/>

</b:if>

Reference:
Show full blog posts in homepage of contempo theme in blogger, 2018
https://www.stramaxon.com/2017/05/contempo-theme-full-blog-post.html