Error message

• Deprecated function: session_set_save_handler(): Providing individual callbacks instead of an object implementing SessionHandlerInterface is deprecated in drupal_session_initialize() (line 242 of /usr/local/www/soc_old/includes/session.inc).
• Deprecated function: DrupalDefaultMetaTag::__construct(): Implicitly marking parameter $data as nullable is deprecated, the explicit nullable type must be used instead in include_once() (line 3542 of /usr/local/www/soc_old/includes/bootstrap.inc).
• Deprecated function: DrupalListMetaTag::__construct(): Implicitly marking parameter $data as nullable is deprecated, the explicit nullable type must be used instead in include_once() (line 3542 of /usr/local/www/soc_old/includes/bootstrap.inc).