#0 B:\xampp\htdocs\kltz\concrete\vendor\doctrine\dbal\lib\Doctrine\DBAL\Connection.php(702): Doctrine\DBAL\DBALException::driverExceptionDuringQuery(Object(PDOException), 'alter table Que...', Array) 
#1 B:\xampp\htdocs\kltz\concrete\src\Database\Connection\Connection.php(67): Doctrine\DBAL\Connection->executeQuery('alter table Que...', Array) 
#2 B:\xampp\htdocs\kltz\concrete\src\Package\StartingPointPackage.php(211): Concrete\Core\Database\Connection\Connection->Execute('alter table Que...') 
#3 B:\xampp\htdocs\kltz\concrete\src\Package\StartingPointPackage.php(191): Concrete\Core\Package\StartingPointPackage->indexAdditionalDatabaseFields() 
#4 [internal function]: Concrete\Core\Package\StartingPointPackage->install_database() 
#5 B:\xampp\htdocs\kltz\concrete\controllers\install.php(261): call_user_func(Array) 
#6 [internal function]: Concrete\Controller\Install->run_routine('elemental_blank', 'install_databas...') 
#7 B:\xampp\htdocs\kltz\concrete\src\Controller\AbstractController.php(149): call_user_func_array(Array, Array) 
#8 B:\xampp\htdocs\kltz\concrete\src\Routing\ControllerRouteCallback.php(25): Concrete\Core\Controller\AbstractController->runAction('run_routine', Array) 
#9 B:\xampp\htdocs\kltz\concrete\src\Routing\Router.php(59): Concrete\Core\Routing\ControllerRouteCallback->execute(Object(Concrete\Core\Http\Request), Object(Concrete\Core\Routing\Route), Array) 
#10 B:\xampp\htdocs\kltz\concrete\src\Support\Facade\Facade.php(116): Concrete\Core\Routing\Router->execute(Object(Concrete\Core\Routing\Route), Array) 
#11 B:\xampp\htdocs\kltz\concrete\src\Application\Application.php(313): Concrete\Core\Support\Facade\Facade::__callStatic('execute', Array)
#12 B:\xampp\htdocs\kltz\concrete\src\Application\Application.php(313): Concrete\Core\Support\Facade\Route::execute(Object(Concrete\Core\Routing\Route), Array) 
#13 B:\xampp\htdocs\kltz\concrete\bootstrap\start.php(179): Concrete\Core\Application\Application->dispatch(Object(Concrete\Core\Http\Request)) 
#14 B:\xampp\htdocs\kltz\concrete\dispatcher.php(36): require('B:\xampp\htdocs...') 
#15 B:\xampp\htdocs\kltz\index.php(2): require('B:\xampp\htdocs...') #16 {main}