You can download again the installation package from our website and install it on yours. That will fix the problem.
Today I download fresh package and install over my instance and got the same error:
Joomla!
403 - Обнаружена ошибка.
Доступ запрещен
Вернуться в Панель управления
Call stack
# Function Location
1 JAdministrator->dispatch() /workspaces/web/administrator/index.php:47
2 JComponentHelper::renderComponent() /workspaces/web/administrator/includes/application.php:153
3 JComponentHelper::executeComponent() /workspaces/web/libraries/joomla/application/component/helper.php:351
4 require_once() /workspaces/web/libraries/joomla/application/component/helper.php:383
5 JController->execute() /workspaces/web/administrator/components/com_hikashop/admin.hikashop.php:39
6 JError::raiseError() /workspaces/web/libraries/joomla/application/component/controller.php:765
7 JError::raise() /workspaces/web/libraries/joomla/error/error.php:251