wpsnoop Function post_thumbnail() conflicts found in 1 plugin

A php function called post_thumbnail() is used in 1 wordpress plugin/theme and could produce a potential conflict if the wrong combination of themes and plugins is used on your site.

To prevent this from happening developers are encouraged to use namespaces and scopes that isolate their functions from colliding with other functions but this is not always done correctly.

We hope this reference helps you to find PHP Fatal error: Cannot redeclare post_thumbnail()

The following plugin registers a function called post_thumbnail():

Plugin
Add Post Thumbnail Shortcode