Fatal error: Uncaught TypeError: Argument 2 passed to WP_Translation_Controller::load_file() must be of the type string, null given, called in /wp-includes/l10n.php on line 838 and defined in /wp-includes/l10n/class-wp-translation-controller.php:101 Stack trace: #0 /wp-includes/l10n.php(838): WP_Translation_Controller->load_file('//wp-content/la...', NULL, 'pl_PL') #1 /wp-includes/l10n.php(1005): load_textdomain(NULL, '//wp-content/la...', 'pl_PL') #2 /wp-content/plugins/wp-category-posts-list/classes/loader.php(37): load_plugin_textdomain(NULL, NULL, '/wp-content/plu...') #3 /wp-content/plugins/wp-category-posts-list/wp-category-post-list.php(67): itgdb_wp_cpl_loader->load() #4 /wp-settings.php(517): include_once('/wp-content/plu...') #5 /wp-config.php(51): require_once('/wp-settings.ph...') #6 /wp-load.php(50): require_once('/wp-config.php') #7 /wp-blog-header.php(13): require_once('/wp-load.php') #8 /index.php(17): require('/wp-blog-header...') #9 {main} thrown in /wp-includes/l10n/class-wp-translation-controller.php on line 101