[Bitrix\Main\DB\ConnectionException] 
Mysql connect error: Too many connections (400)
#0: Bitrix\Main\DB\MysqlConnection->connectInternal()
	/usr/home/ctc/www/bitrix/modules/main/lib/data/connection.php:48
#1: Bitrix\Main\Data\Connection->getResource()
	/usr/home/ctc/www/bitrix/modules/main/lib/db/mysqlsqlhelper.php:11
#2: Bitrix\Main\DB\MysqlSqlHelper->forSql("iblock")
	/usr/home/ctc/www/bitrix/modules/main/lib/eventmanager.php:158
#3: Bitrix\Main\EventManager::registerEventHandlerInternal("iblock", "OnIBlockPropertyBuildList", "main", "CPropertyQuiz", "GetUserTypeDescription", 100, "/php_interface/...s/prop_quiz.php" (37), array(0), 1)
	/usr/home/ctc/www/bitrix/modules/main/lib/eventmanager.php:147
#4: Bitrix\Main\EventManager->registerEventHandlerCompatible("iblock", "OnIBlockPropertyBuildList", "main", "CPropertyQuiz", "GetUserTypeDescription", 100, "/php_interface/...s/prop_quiz.php" (37), array(0))
	/usr/home/ctc/www/bitrix/modules/main/classes/general/module.php:489
#5: RegisterModuleDependences("iblock", "OnIBlockPropertyBuildList", "main", "CPropertyQuiz", "GetUserTypeDescription", 100, "/php_interface/...s/prop_quiz.php" (37))
	/usr/home/ctc/www/bitrix/php_interface/s1/init.php:173
#6: include_once("/usr/home/ctc/w...ace/s1/init.php" (50))
	/usr/home/ctc/www/bitrix/modules/main/include.php:246
#7: require_once("/usr/home/ctc/w...ain/include.php" (49))
	/usr/home/ctc/www/bitrix/modules/main/include/prolog_before.php:14
#8: require_once("/usr/home/ctc/w...olog_before.php" (63))
	/usr/home/ctc/www/rus/projects/controller.php:2
#9: include_once("/usr/home/ctc/w.../controller.php" (45))
	/usr/home/ctc/www/bitrix/modules/main/include/urlrewrite.php:150
#10: include_once("/usr/home/ctc/w.../urlrewrite.php" (60))
	/usr/home/ctc/www/bitrix/urlrewrite.php:2