Can someone explain me why I get this error when I try to open the settings form?
Patch is in
Symfony\Component\DependencyInjection\Exception\ServiceNotFoundException: You have requested a non-existent service "drupal\google_analytics\google_analyticssettingsform". in Symfony\Component\DependencyInjection\Container->get() (line 279 of drupal8\core\vendor\symfony\dependency-injection\Symfony\Component\DependencyInjection\Container.php).
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The google_analytics.routing.yml exists and the form file, too. Cleared the cache several time... I have no idea what this message tries to tell me nor do I have any idea what a "Service" is and how I'm able to make it exists. The base code has been copied from Locale module and than customized.