Unexpected Error when trying to access the storage field settings of the mailchimp subscription field (error log: simplenews_subscriber entity type does not exist)

I've added an entity type check for this which makes it not to WSOD.

I could not reproduce this. It looks like part of the steps to reproduce would be to install and set up simplenews some way?

Thanks for submitting this ticket — and sorry we didn’t get back to you about it sooner. We are cleaning up old issues and issue for old versions and are going to close this one. If this issue is still relevant for you, please re-open it and update the “Version” field, and include any updates to the behavior you are seeing. With a smaller issue queue, we’ll have an easier time getting back to you.