How to solve Mismatched entity and/or field definitions

 

https://www.drupal.org/forum/support/upgrading-drupal/2019-06-23/how-to-solve-mismatched-entity-andor-field-definitions

 

Entity/field definitions

Mismatched entity and/or field definitionsThe following changes were detected in the entity type and field definitions.

Content

  • The CSS class(es) field needs to be updated.

cd web/modules/contrib

grep -R class(es)

node_class/node_class.module:      ->setLabel(t('CSS class(es)'))

Uninstalled Node Class