It is a Joomla! extension that puts meta tags into the site code. The component provides a list with predefined and popular meta tags. There are Open Graph, Facebook, Google and other semantic tags.
There are numberous instances of JHelperArray being passed non-array data in itpmetatags.php
Joomla 3.4 no longer accepts non-array data being passed and so throughs an error when variable type is not checked before passing.
There are numberous instances of JHelperArray being passed non-array data in itpmetatags.php Joomla 3.4 no longer accepts non-array data being passed and so throughs an error when variable type is not checked before passing.