Fatal error: Call to a member function Query() on a non-object in /home/bitrix/www/bitrix/php_interface/after_connect_d7.php on line 3

Call Stack:
    0.0000     631072   1. {main}() /home/bitrix/www/index.php:0
    0.0001     631512   2. require('/home/bitrix/www/bitrix/header.php') /home/bitrix/www/index.php:2
    0.0001     631936   3. require_once('/home/bitrix/www/bitrix/modules/main/include/prolog.php') /home/bitrix/www/bitrix/header.php:1
    0.0005     716240   4. require_once('/home/bitrix/www/bitrix/modules/main/include/prolog_before.php') /home/bitrix/www/bitrix/modules/main/include/prolog.php:10
    0.0005     721944   5. require_once('/home/bitrix/www/bitrix/modules/main/include.php') /home/bitrix/www/bitrix/modules/main/include/prolog_before.php:14
    0.0055    3183656   6. Bitrix\Main\Application->initializeExtendedKernel() /home/bitrix/www/bitrix/modules/main/include.php:24
    0.0055    3183704   7. Bitrix\Main\HttpApplication->initializeContext() /home/bitrix/www/bitrix/modules/main/lib/application.php:122
    0.0065    3288728   8. Bitrix\Main\HttpRequest->__construct() /home/bitrix/www/bitrix/modules/main/lib/httpapplication.php:43
    0.0066    3291480   9. Bitrix\Main\HttpRequest->prepareCookie() /home/bitrix/www/bitrix/modules/main/lib/httprequest.php:63
    0.0068    3321680  10. Bitrix\Main\Config\Option::get() /home/bitrix/www/bitrix/modules/main/lib/httprequest.php:329
    0.0070    3321760  11. Bitrix\Main\Config\Option::load() /home/bitrix/www/bitrix/modules/main/lib/config/option.php:36
    0.0084    3452008  12. Bitrix\Main\DB\Connection->query() /home/bitrix/www/bitrix/modules/main/lib/config/option.php:150
    0.0086    3452592  13. Bitrix\Main\DB\MysqlConnection->queryInternal() /home/bitrix/www/bitrix/modules/main/lib/db/connection.php:329
    0.0086    3452592  14. Bitrix\Main\DB\MysqlConnection->connectInternal() /home/bitrix/www/bitrix/modules/main/lib/db/mysqlconnection.php:91
    0.0090    3453800  15. include('/home/bitrix/www/bitrix/php_interface/after_connect_d7.php') /home/bitrix/www/bitrix/modules/main/lib/db/mysqlconnection.php:52