Fatal error: Uncaught TypeError: in_array(): Argument #2 ($haystack) must be of type array, null given in /home/klient.dhosting.pl/mozaiqa/okrakow.pl/public_html/wp-content/plugins/kalendarz/kalendarz.php:98 Stack trace: #0 /home/klient.dhosting.pl/mozaiqa/okrakow.pl/public_html/wp-content/plugins/kalendarz/kalendarz.php(98): in_array('01.10.2025', NULL) #1 /home/klient.dhosting.pl/mozaiqa/okrakow.pl/public_html/wp-includes/shortcodes.php(434): custom_calendar_shortcode(Array, '', 'custom_calendar') #2 [internal function]: do_shortcode_tag(Array) #3 /home/klient.dhosting.pl/mozaiqa/okrakow.pl/public_html/wp-includes/shortcodes.php(273): preg_replace_callback('/\\[(\\[?)(custom...', 'do_shortcode_ta...', '[custom_calenda...') #4 /home/klient.dhosting.pl/mozaiqa/okrakow.pl/public_html/wp-content/themes/bricks/includes/elements/shortcode.php(96): do_shortcode('[custom_calenda...') #5 /home/klient.dhosting.pl/mozaiqa/okrakow.pl/public_html/wp-content/themes/bricks/includes/elements/base.php(2633): Bricks\Element_Shortcode->render() #6 /home/klient.dhosting.pl/mozaiqa/okrakow.pl/public_html/wp-content/themes/bricks/includes/frontend.php(623): Bricks\Element->init() #7 /home/klient.dhosting.pl/mozaiqa/okrakow.pl/public_html/wp-content/themes/bricks/includes/elements/container.php(968): Bricks\Frontend::render_element(Array) #8 /home/klient.dhosting.pl/mozaiqa/okrakow.pl/public_html/wp-content/themes/bricks/includes/elements/base.php(2633): Bricks\Element_Container->render() #9 /home/klient.dhosting.pl/mozaiqa/okrakow.pl/public_html/wp-content/themes/bricks/includes/frontend.php(623): Bricks\Element->init() #10 /home/klient.dhosting.pl/mozaiqa/okrakow.pl/public_html/wp-content/themes/bricks/includes/elements/container.php(968): Bricks\Frontend::render_element(Array) #11 /home/klient.dhosting.pl/mozaiqa/okrakow.pl/public_html/wp-content/themes/bricks/includes/elements/base.php(2633): Bricks\Element_Container->render() #12 /home/klient.dhosting.pl/mozaiqa/okrakow.pl/public_html/wp-content/themes/bricks/includes/frontend.php(623): Bricks\Element->init() #13 /home/klient.dhosting.pl/mozaiqa/okrakow.pl/public_html/wp-content/themes/bricks/includes/elements/container.php(968): Bricks\Frontend::render_element(Array) #14 /home/klient.dhosting.pl/mozaiqa/okrakow.pl/public_html/wp-content/themes/bricks/includes/elements/base.php(2633): Bricks\Element_Container->render() #15 /home/klient.dhosting.pl/mozaiqa/okrakow.pl/public_html/wp-content/themes/bricks/includes/frontend.php(623): Bricks\Element->init() #16 /home/klient.dhosting.pl/mozaiqa/okrakow.pl/public_html/wp-content/themes/bricks/includes/elements/container.php(968): Bricks\Frontend::render_element(Array) #17 /home/klient.dhosting.pl/mozaiqa/okrakow.pl/public_html/wp-content/themes/bricks/includes/elements/base.php(2633): Bricks\Element_Container->render() #18 /home/klient.dhosting.pl/mozaiqa/okrakow.pl/public_html/wp-content/themes/bricks/includes/frontend.php(623): Bricks\Element->init() #19 /home/klient.dhosting.pl/mozaiqa/okrakow.pl/public_html/wp-content/themes/bricks/includes/frontend.php(758): Bricks\Frontend::render_element(Array) #20 /home/klient.dhosting.pl/mozaiqa/okrakow.pl/public_html/wp-content/themes/bricks/includes/frontend.php(1005): Bricks\Frontend::render_data(Array) #21 /home/klient.dhosting.pl/mozaiqa/okrakow.pl/public_html/wp-content/themes/bricks/single.php(15): Bricks\Frontend::render_content(Array) #22 /home/klient.dhosting.pl/mozaiqa/okrakow.pl/public_html/wp-includes/template-loader.php(106): include('/home/klient.dh...') #23 /home/klient.dhosting.pl/mozaiqa/okrakow.pl/public_html/wp-blog-header.php(19): require_once('/home/klient.dh...') #24 /home/klient.dhosting.pl/mozaiqa/okrakow.pl/public_html/index.php(17): require('/home/klient.dh...') #25 {main} thrown in /home/klient.dhosting.pl/mozaiqa/okrakow.pl/public_html/wp-content/plugins/kalendarz/kalendarz.php on line 98