[Error] 
Class 'Bitrix\Disk\File' not found (0)
/home/bitrix/ext_www/slesarka.by/bitrix/modules/im/lib/model/message.php:309
#0: Bitrix\Im\Model\MessageTable::generateSearchContent(array)
	/home/bitrix/ext_www/slesarka.by/bitrix/modules/im/lib/model/message.php:258
#1: Bitrix\Im\Model\MessageTable::indexRecord(string)
	/home/bitrix/ext_www/slesarka.by/bitrix/modules/im/lib/update/messageindex.php:82
#2: Bitrix\Im\Update\MessageIndex->execute(array)
	/home/bitrix/ext_www/slesarka.by/bitrix/modules/main/lib/update/stepper.php:148
#3: Bitrix\Main\Update\Stepper::execAgent()
	/home/bitrix/ext_www/slesarka.by/bitrix/modules/main/classes/mysql/agent.php(162) : eval()'d code:1
#4: eval
	/home/bitrix/ext_www/slesarka.by/bitrix/modules/main/classes/mysql/agent.php:162
#5: CAgent::ExecuteAgents(string)
	/home/bitrix/ext_www/slesarka.by/bitrix/modules/main/classes/mysql/agent.php:40
#6: CAgent::CheckAgents()
	/home/bitrix/ext_www/slesarka.by/bitrix/modules/main/include.php:271
#7: require_once(string)
	/home/bitrix/ext_www/slesarka.by/bitrix/modules/main/include/prolog_before.php:14
#8: require_once(string)
	/home/bitrix/ext_www/slesarka.by/bitrix/modules/main/include/prolog.php:10
#9: require_once(string)
	/home/bitrix/ext_www/slesarka.by/bitrix/header.php:2
#10: require(string)
	/home/bitrix/ext_www/slesarka.by/catalog/index.php:2
#11: include_once(string)
	/home/bitrix/ext_www/slesarka.by/bitrix/modules/main/include/urlrewrite.php:159
#12: include_once(string)
	/home/bitrix/ext_www/slesarka.by/bitrix/urlrewrite.php:2