Mismatched entity and/or field definitions for comment field I have been receiving this message


  ENTITY/FIELD DEFINITIONS Mismatched entity and/or field definitions
  The following changes were detected in the entity type and field
  definitions. Comment The Entity type field needs to be updated. The
  Comment field name field needs to be updated.


I have tried quite a lot of things including running entup (apparently depreciated) and adding some lines on entity update to index.php. Nothing has worked, I don't really use comments on my site, but would like to resolve it, any ideas?
drush entity-updates (aka drush entup) has been deprecated as of Drupal 8.7.0. You either need to write an update script using hook_update_N(), or you can use the Devel Entity Updates module, which does the same thing as drush entup did previous to 8.7.0.