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Fatal error: Uncaught TypeError: sizeof(): Argument #1 ($value) must be of type Countable|array, bool given in /home/zlempl/domains/zlem.pl/public_html/wp-content/themes/realfactory/include/navigation-menu.php:173 Stack trace: #0 /home/zlempl/domains/zlem.pl/public_html/wp-includes/class-wp-walker.php(150): realfactory_menu_walker->start_el() #1 /home/zlempl/domains/zlem.pl/public_html/wp-includes/class-wp-walker.php(252): Walker->display_element() #2 /home/zlempl/domains/zlem.pl/public_html/wp-includes/nav-menu-template.php(616): Walker->walk() #3 /home/zlempl/domains/zlem.pl/public_html/wp-includes/nav-menu-template.php(236): walk_nav_menu_tree() #4 /home/zlempl/domains/zlem.pl/public_html/wp-content/themes/realfactory/header/header-style-bar.php(112): wp_nav_menu() #5 /home/zlempl/domains/zlem.pl/public_html/wp-includes/template.php(812): require('/home/zlempl/do...') #6 /home/zlempl/domains/zlem.pl/public_html/wp-includes/template.php(745): load_template() #7 /home/zlempl/domains/zlem.pl/public_html/wp-includes/general-template.php(206): locate_template() #8 /home/zlempl/domains/zlem.pl/public_html/wp-content/themes/realfactory/header.php(147): get_template_part() #9 /home/zlempl/domains/zlem.pl/public_html/wp-includes/template.php(810): require_once('/home/zlempl/do...') #10 /home/zlempl/domains/zlem.pl/public_html/wp-includes/template.php(745): load_template() #11 /home/zlempl/domains/zlem.pl/public_html/wp-includes/general-template.php(48): locate_template() #12 /home/zlempl/domains/zlem.pl/public_html/wp-content/themes/realfactory/page.php(6): get_header() #13 /home/zlempl/domains/zlem.pl/public_html/wp-includes/template-loader.php(106): include('/home/zlempl/do...') #14 /home/zlempl/domains/zlem.pl/public_html/wp-blog-header.php(19): require_once('/home/zlempl/do...') #15 /home/zlempl/domains/zlem.pl/public_html/index.php(17): require('/home/zlempl/do...') #16 {main} thrown in /home/zlempl/domains/zlem.pl/public_html/wp-content/themes/realfactory/include/navigation-menu.php on line 173