[TypeError] Return value of Seo\CategoryHeading::getCurrentCity() must be of the type string, null returned (0) /var/www/upravdom/bitrix.public/www/local/php_interface/classes/Seo/CategoryHeading.php:86 #0: Seo\CategoryHeading::getCurrentCity /var/www/upravdom/bitrix.public/www/local/php_interface/classes/Seo/CategoryHeading.php:30 #1: Seo\CategoryHeading::isAddCity /var/www/upravdom/bitrix.public/www/local/php_interface/classes/Seo/CategoryHeading.php:13 #2: Seo\CategoryHeading::getHeadingByCity /var/www/upravdom/bitrix.public/www/catalog/index_seo_filter_result_old.php:174 #3: include(string) /var/www/upravdom/bitrix.core/bitrix/modules/main/classes/general/main.php:1399 #4: CAllMain->IncludeFile /var/www/upravdom/bitrix.public/www/catalog/index.php:164 #5: include_once(string) /var/www/upravdom/bitrix.core/bitrix/modules/main/include/urlrewrite.php:160 #6: include_once(string) /var/www/upravdom/bitrix.core/bitrix/urlrewrite.php:2