Thank you for this plugin. I am evaluating for potential use on a new website. I have found the following PHP error warning is generated:
Declaration of PLL_Walker_List::walk($elements, $args = Array) should be compatible with Walker::walk($elements, $max_depth, …$args) wp-content/plugins/polylang/include/walker-list.php:65
I am using version 2.6.6.
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