	public function getErrorMessage() {
		$vs_error_message = $this->opo_error_messages->get($this->opn_error_number);
		if ($vs_error_message) {
			return $vs_error_message;
		} else {
			return "Unknown error: ".$this->opn_error_number;
		}
	}
The software does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.