[RuntimeException] Could not start session because headers have already been sent. "/home/l/lnpconcept/public_html/404.php":1. (0) /home/l/lnpconcept/public_html/bitrix/modules/main/lib/session/session.php:144 #0: Bitrix\Main\Session\Session->start() /home/l/lnpconcept/public_html/bitrix/modules/main/lib/session/kernelsessionproxy.php:47 #1: Bitrix\Main\Session\KernelSessionProxy->start() /home/l/lnpconcept/public_html/bitrix/modules/main/include.php:181 #2: require_once(string) /home/l/lnpconcept/public_html/bitrix/modules/main/include/prolog_before.php:19 #3: require_once(string) /home/l/lnpconcept/public_html/bitrix/modules/main/include/prolog.php:10 #4: require_once(string) /home/l/lnpconcept/public_html/bitrix/header.php:1 #5: require(string) /home/l/lnpconcept/public_html/404.php:15 #6: include_once(string) /home/l/lnpconcept/public_html/bitrix/urlrewrite.php:4 ----------