protected function checkValidationError(): void
    {
        $validationErrors = $this->validation?->getErrors();

        if ($validationErrors !== [] && $validationErrors !== null) {
            $message = 'Validation error:';

            foreach ($validationErrors as $field => $error) {
                $message .= ' [' . $field . '] ' . $error;
            }

            throw new ValidationException($message);
        }
    }