[BUG] Error on initialization of settings

[grischpel]

(1/1) Error
Typed property In2code\Powermail\Domain\Validator\AbstractValidator::$settings must not be accessed before initialization

in /var/www/website/htdocs/vendor/in2code/powermail/Classes/Domain/Validator/AbstractValidator.php line 61
     *
     * @return bool
     */
    public function isServerValidationEnabled(): bool {
  return $this->settings['validation']['server'] === '1';
        return isset($this->settings['validation']['server']) 
            && $this->settings['validation']['server'] === '1';
    }

In file /htdocs/vendor/in2code/powermail/Classes/Domain/Validator/AbstractValidator

public function isServerValidationEnabled(): bool {
    return $this->settings['validation']['server'] === '1';
}

Temporary fix:

public function isServerValidationEnabled(): bool {
    return isset($this->settings['validation']['server']) && $this->settings['validation']['server'] === '1';
}

Typo3 Version: 12.4.14
Powermail Version: 12.4.2