While I am using structured data testing tool to check the structured data of my blogger blog i am getting blogposting errors regarding date and headling.

datepublished error in this code

```
<abbr class='published updated' itemprop='datePublished' title='2015-07-06T07:12:00-07:00'>

```

and headline missing and required error in this code

```
<article class='post hentry' itemprop='blogPost' itemscope='itemscope' itemtype='http://schema.org/BlogPosting'>

```

I have searched alot on google but did not find any solution so please help me in this error.