wpsnoop Function book_upgrade_content() conflicts found in plugins 1 theme

A php function called book_upgrade_content() 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 book_upgrade_content()

The following theme registers a function called book_upgrade_content():

Theme
Book Lite