Fatal error: Uncaught TypeError: method_exists(): Argument #1 ($object_or_class) must be of type object|string, null given in /home/komorska/domains/komorska.edu.pl/public_html/wp-content/plugins/wp-pagebuilder/classes/Layout_Generator.php:199 Stack trace: #0 /home/komorska/domains/komorska.edu.pl/public_html/wp-content/plugins/wp-pagebuilder/classes/Layout_Generator.php(199): method_exists() #1 /home/komorska/domains/komorska.edu.pl/public_html/wp-content/plugins/wp-pagebuilder/classes/Layout_Generator.php(11): WPPB_Layout_Generator->generate_layout() #2 /home/komorska/domains/komorska.edu.pl/public_html/wp-content/plugins/wp-pagebuilder/classes/Frontend.php(249): WPPB_Layout_Generator->generate() #3 /home/komorska/domains/komorska.edu.pl/public_html/wp-includes/class-wp-hook.php(324): WPPB_Frontend->filter_content_with_pagebuilder() #4 /home/komorska/domains/komorska.edu.pl/public_html/wp-includes/plugin.php(205): WP_Hook->apply_filters() #5 /home/komorska/domains/komorska.edu.pl/public_html/wp-includes/post-template.php(256): apply_filters() #6 /home/komorska/domains/komorska.edu.pl/public_html/wp-content/plugins/wp-pagebuilder/inc/default-template.php(31): the_content() #7 /home/komorska/domains/komorska.edu.pl/public_html/wp-includes/template-loader.php(106): include('/home/komorska/...') #8 /home/komorska/domains/komorska.edu.pl/public_html/wp-blog-header.php(19): require_once('/home/komorska/...') #9 /home/komorska/domains/komorska.edu.pl/public_html/index.php(17): require('/home/komorska/...') #10 {main} thrown in /home/komorska/domains/komorska.edu.pl/public_html/wp-content/plugins/wp-pagebuilder/classes/Layout_Generator.php on line 199