I'm getting the following error on my Drupal 8 configuration page.
Mismatched entity and/or field definitions
The following changes were detected in the entity type and field definitions.
Content Update the node.rng_capacity field. Update the node.rng_registrants_duplicate field. Update the node.rng_registration_groups field. Update the node.rng_registration_type field. Update the node.rng_reply_to field. Update the node.rng_status field.
I'm not sure what caused these issues or how to go about resolving them. I think they may be leftover fragments/elements from when I deleted a registration or entity type.
drush entity-updateson your site should cancel these messages.