Fatal error: Uncaught TypeError: count(): Argument #1 ($value) must be of type Countable|array, null given in /var/www/experthub/app/sites/all/modules/ajax/plugins/multipageform/ajax_multipageform.module:104 Stack trace: #0 /var/www/experthub/app/includes/form.inc(421): ajax_multipageform_submit_form() #1 /var/www/experthub/app/includes/form.inc(103): drupal_retrieve_form() #2 /var/www/experthub/app/sites/all/modules/ajax/plugins/multipageform/ajax_multipageform.module(55): drupal_get_form() #3 /var/www/experthub/app/includes/module.inc(476): ajax_multipageform_block() #4 /var/www/experthub/app/sites/all/modules/expert_page/expert_page.module(387): module_invoke() #5 /var/www/experthub/app/sites/all/modules/expert_page/expert_page.module(365): expert_page_process_blocks_regions() #6 /var/www/experthub/app/modules/node/node.module(665): expert_page_view() #7 /var/www/experthub/app/modules/node/node.module(1095): node_invoke() #8 /var/www/experthub/app/modules/node/node.module(1019): node_build_content() #9 /var/www/experthub/app/modules/node/node.module(1114): node_view() #10 /var/www/experthub/app/modules/node/node.module(1820): node_show() #11 /var/www/experthub/app/includes/menu.inc(350): node_page_view() #12 /var/www/experthub/app/index.php(18): menu_execute_active_handler() #13 {main} thrown in /var/www/experthub/app/sites/all/modules/ajax/plugins/multipageform/ajax_multipageform.module on line 104