The "media_type" entity type does not exist.

In src/Form/AutoTranslatorSettingsForm.php line 93

    $media_types = $this->entityTypeManager
      ->getStorage('media_type')
      ->loadMultiple();

This would seem to assume that the core 'media' module is installed, yet that module is not listed as a dependency.

Solution:

if($this->moduleHandler->moduleExists('media')) {
$media_types = $this->entityTypeManager
->getStorage('media_type')
->loadMultiple();
}