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[RuntimeException] 
Could not start session because headers have already been sent. "/home/powernew/powernews.ru/docs/pr/news_index.php":3. (0)
/home/powernew/powernews.ru/docs/bitrix/modules/main/lib/session/session.php:136
#0: Bitrix\Main\Session\Session->start()
	/home/powernew/powernews.ru/docs/bitrix/modules/main/lib/session/kernelsessionproxy.php:42
#1: Bitrix\Main\Session\KernelSessionProxy->start()
	/home/powernew/powernews.ru/docs/bitrix/modules/main/include.php:169
#2: require_once(string)
	/home/powernew/powernews.ru/docs/bitrix/modules/main/include/prolog_before.php:14
#3: require_once(string)
	/home/powernew/powernews.ru/docs/bitrix/modules/main/include/prolog.php:10
#4: require_once(string)
	/home/powernew/powernews.ru/docs/bitrix/header.php:1
#5: require(string)
	/home/powernew/powernews.ru/docs/pr/news_index.php:17
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