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[RuntimeException] Could not start session because headers have already been sent. "/home/b/balashgt/centreal.ru/public_html/site_dm/ajax/order_call.php":5. (0) /home/b/balashgt/centreal.ru/public_html/bitrix/modules/main/lib/session/session.php:124 #0: Bitrix\Main\Session\Session->start() /home/b/balashgt/centreal.ru/public_html/bitrix/modules/main/lib/session/kernelsessionproxy.php:52 #1: Bitrix\Main\Session\KernelSessionProxy->start() /home/b/balashgt/centreal.ru/public_html/bitrix/modules/main/include.php:299 #2: require_once(string) /home/b/balashgt/centreal.ru/public_html/bitrix/modules/main/include/prolog_before.php:14 #3: require_once(string) /home/b/balashgt/centreal.ru/public_html/bitrix/modules/main/include/prolog.php:10 #4: require_once(string) /home/b/balashgt/centreal.ru/public_html/bitrix/header.php:1 #5: require(string) /home/b/balashgt/centreal.ru/public_html/site_dm/ajax/order_call.php:12