0 Warning: Missing required field "updated"

In some blogger templates, you may experience a following error :
Warning: Missing required field "updated"







Open Blogger HTML editor and locate following code :
<a class='timestamp-link' expr:href='data:post.url' rel='bookmark' title='permanent link'><abbr class='published' expr:title='data:post.timestampISO8601'><data:post.timestamp/></abbr></a>

Then change it with this one :
<a class='updated' expr:href='data:post.url' rel='bookmark' title='permanent link'><abbr class='updated' expr:title='data:post.timestampISO8601'><data:post.timestamp/></abbr></a>