[Error] 
Class 'b2b\Exception' not found (0)
/home/bitrix/www/local/php_interface/class/b2b.i-t.pro/Api.php:128
#0: b2b\Api->auth_api()
	/home/bitrix/www/local/php_interface/class/b2b.i-t.pro/Api.php:395
#1: b2b\Api::b2bApiBtxUpdate()
	/home/bitrix/www/bitrix/modules/main/classes/mysql/agent.php(163) : eval()'d code:1
#2: eval
	/home/bitrix/www/bitrix/modules/main/classes/mysql/agent.php:163
#3: CAgent::ExecuteAgents(string)
	/home/bitrix/www/bitrix/modules/main/classes/mysql/agent.php:40
#4: CAgent::CheckAgents()
	/home/bitrix/www/bitrix/modules/main/include.php:264
#5: require_once(string)
	/home/bitrix/www/bitrix/modules/main/include/prolog_before.php:14
#6: require_once(string)
	/home/bitrix/www/bitrix/modules/main/include/prolog.php:10
#7: require_once(string)
	/home/bitrix/www/bitrix/header.php:1
#8: require(string)
	/home/bitrix/www/index.php:2