@backtrace" in Drupal\Component\Render\FormattableMarkup::placeholderFormat() (line 245 of /home/cegensaugedu/public_html/core/lib/Drupal/Component/Render/FormattableMarkup.php).
Drupal\Component\Render\FormattableMarkup::placeholderFormat('%type: @message in %function (line %line of %file). @backtrace', Array) (Line: 99)
Drupal\Component\Render\FormattableMarkup->__toString() (Line: 198)
_drupal_exception_handler_additional(Object, Object) (Line: 180)
_drupal_exception_handler(Object)
Error: Undefined constant PDO::MYSQL_ATTR_USE_BUFFERED_QUERY in Drupal\mysql\Driver\Database\mysql\Connection::open() (line 154 of /home/cegensaugedu/public_html/core/modules/mysql/src/Driver/Database/mysql/Connection.php).
Drupal\mysql\Driver\Database\mysql\Connection::open(Array) (Line: 445)
Drupal\Core\Database\Database::openConnection('default', 'default') (Line: 188)
Drupal\Core\Database\Database::getConnection('default')
call_user_func_array('Drupal\Core\Database\Database::getConnection', Array) (Line: 79)
Drupal\Component\DependencyInjection\PhpArrayContainer->createService(Array, 'database') (Line: 177)
Drupal\Component\DependencyInjection\Container->get('database', 1) (Line: 212)
Drupal\Component\DependencyInjection\PhpArrayContainer->resolveServicesAndParameters(Array) (Line: 62)
Drupal\Component\DependencyInjection\PhpArrayContainer->createService(Array, 'cache.container') (Line: 177)
Drupal\Component\DependencyInjection\Container->get('cache.container') (Line: 539)
Drupal\Core\DrupalKernel->getCachedContainerDefinition() (Line: 910)
Drupal\Core\DrupalKernel->initializeContainer() (Line: 482)
Drupal\Core\DrupalKernel->boot() (Line: 684)
Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
User warning: Invalid placeholder (severity_level) with string: "%type: @message in %function (line %line of %file). @backtrace" in Drupal\Component\Render\FormattableMarkup::placeholderFormat() (line 245 of /home/cegensaugedu/public_html/core/lib/Drupal/Component/Render/FormattableMarkup.php).
Drupal\Component\Render\FormattableMarkup::placeholderFormat('%type: @message in %function (line %line of %file). @backtrace', Array) (Line: 99)
Drupal\Component\Render\FormattableMarkup->__toString() (Line: 199)
_drupal_exception_handler_additional(Object, Object) (Line: 180)
_drupal_exception_handler(Object)
Error: Class "Symfony\Component\HttpFoundation\Response" not found in _drupal_log_error() (line 165 of /home/cegensaugedu/public_html/core/includes/errors.inc).
_drupal_log_error(Array, ) (Line: 71)
_drupal_error_handler_real(8192, 'Symfony\Component\HttpFoundation\Response::setStatusCode(): Implicitly marking parameter $text as nullable is deprecated, the explicit nullable type must be used instead', '/home/cegensaugedu/public_html/vendor/symfony/http-foundation/Response.php', 447) (Line: 158)
_drupal_error_handler(8192, 'Symfony\Component\HttpFoundation\Response::setStatusCode(): Implicitly marking parameter $text as nullable is deprecated, the explicit nullable type must be used instead', '/home/cegensaugedu/public_html/vendor/symfony/http-foundation/Response.php', 447) (Line: 571)
include('/home/cegensaugedu/public_html/core/includes/bootstrap.inc') (Line: 571)
Composer\Autoload\includeFile('/home/cegensaugedu/public_html/vendor/composer/../symfony/http-foundation/Response.php') (Line: 428)
Composer\Autoload\ClassLoader->loadClass('Symfony\Component\HttpFoundation\Response') (Line: 165)
_drupal_log_error(Array, 1) (Line: 176)
_drupal_exception_handler(Object)