Additional uncaught exception thrown while handling exception.

Original

UnexpectedValueException: RecursiveDirectoryIterator::__construct(/usr/share/drupal9/sites/all): failed to open dir: Permission denied in RecursiveDirectoryIterator->__construct() (line 409 of /usr/share/drupal9/core/lib/Drupal/Core/Extension/ExtensionDiscovery.php).

RecursiveDirectoryIterator->__construct() (Line: 409)
Drupal\Core\Extension\ExtensionDiscovery->scanDirectory() (Line: 205)
Drupal\Core\Extension\ExtensionDiscovery->scan() (Line: 447)
install_begin_request() (Line: 116)
install_drupal() (Line: 48)

Additional

Error: Call to undefined function Drupal\Core\Render\system_page_attachments() in Drupal\Core\Render\BareHtmlPageRenderer->renderBarePage() (line 65 of /usr/share/drupal9/core/lib/Drupal/Core/Render/BareHtmlPageRenderer.php).

Drupal\Core\Render\BareHtmlPageRenderer->renderBarePage() (Line: 76)
Drupal\Core\ProxyClass\Render\BareHtmlPageRenderer->renderBarePage() (Line: 1058)
install_display_output() (Line: 271)
_drupal_log_error() (Line: 365)
_drupal_exception_handler()