Fatal error: Uncaught TypeError: array_unique(): Argument #1 ($array) must be of type array, bool given in /var/www/vhosts/nianbattery.com/httpdocs/wp-content/plugins/polylang/modules/sync/sync-post-metas.php:78 Stack trace: #0 /var/www/vhosts/nianbattery.com/httpdocs/wp-content/plugins/polylang/modules/sync/sync-post-metas.php(78): array_unique() #1 /var/www/vhosts/nianbattery.com/httpdocs/wp-content/plugins/polylang/modules/sync/sync-metas.php(271): PLL_Sync_Post_Metas->get_metas_to_copy() #2 /var/www/vhosts/nianbattery.com/httpdocs/wp-includes/class-wp-hook.php(310): PLL_Sync_Metas->update_meta() #3 /var/www/vhosts/nianbattery.com/httpdocs/wp-includes/class-wp-hook.php(334): WP_Hook->apply_filters() #4 /var/www/vhosts/nianbattery.com/httpdocs/wp-includes/plugin.php(517): WP_Hook->do_action() #5 /var/www/vhosts/nianbattery.com/httpdocs/wp-includes/meta.php(290): do_action() #6 /var/www/vhosts/nianbattery.com/httpdocs/wp-includes/post.php(2548): update_metadata() #7 /var/www/vhosts/nianbattery.com/httpdocs/wp-content/themes/petroco/inc/post-view.php(11): update_post_meta() #8 /var/www/vhosts/nianbattery.com/httpdocs/wp-content/themes/petroco/inc/post-view.php(22): wpb_set_post_views() #9 /var/www/vhosts/nianbattery.com/httpdocs/wp-includes/class-wp-hook.php(310): wpb_track_post_views() #10 /var/www/vhosts/nianbattery.com/httpdocs/wp-includes/class-wp-hook.php(334): WP_Hook->apply_filters() #11 /var/www/vhosts/nianbattery.com/httpdocs/wp-includes/plugin.php(517): WP_Hook->do_action() #12 /var/www/vhosts/nianbattery.com/httpdocs/wp-includes/general-template.php(3053): do_action() #13 /var/www/vhosts/nianbattery.com/httpdocs/wp-content/themes/petroco/header.php(11): wp_head() #14 /var/www/vhosts/nianbattery.com/httpdocs/wp-includes/template.php(785): require_once('...') #15 /var/www/vhosts/nianbattery.com/httpdocs/wp-includes/template.php(720): load_template() #16 /var/www/vhosts/nianbattery.com/httpdocs/wp-includes/general-template.php(48): locate_template() #17 /var/www/vhosts/nianbattery.com/httpdocs/wp-content/themes/petroco/single.php(2): get_header() #18 /var/www/vhosts/nianbattery.com/httpdocs/wp-includes/template-loader.php(106): include('...') #19 /var/www/vhosts/nianbattery.com/httpdocs/wp-blog-header.php(19): require_once('...') #20 /var/www/vhosts/nianbattery.com/httpdocs/index.php(17): require('...') #21 {main} thrown in /var/www/vhosts/nianbattery.com/httpdocs/wp-content/plugins/polylang/modules/sync/sync-post-metas.php on line 78