Error message

• Deprecated function: session_set_save_handler(): Providing individual callbacks instead of an object implementing SessionHandlerInterface is deprecated in drupal_session_initialize() (line 245 of includes/session.inc).
• Deprecated function: videojs_utility::getDisplaySettingsForm(): Implicitly marking parameter $values as nullable is deprecated, the explicit nullable type must be used instead in include_once() (line 3575 of includes/bootstrap.inc).