Let us learn to resolve the drupal Mismatched entity error with the support of our Drupal support services at Bobcares.

Error: Drupal Mismatched Entity

On a site’s Status page, we get “Mismatched entity and/or field definitions” warnings. We note that database updates no longer perform entity updates.

Error: Drupal Mismatched Entity: Cause and Resolution

The Drupal community modified the procedure for implementing entity upgrades. Support for entity updates has been removed from Drupal core.

To apply entity changes, the devel_entity_updates module is now required, and even with this module on a non-production site, updates cannot be applied to current content. As a result, the recommendations on the project page.

Customers should fix their workflow so that the error does not occur in the future (ideally), but for the time being, more manual database schema changes will be required to correct existing Prod that has the error.

In this case finding and contributing to the Issue Queues of the contrib modules that define the entities is critical.

We have two options for dealing with this problem.

We can execute drush entity-updates if we have Drush installed. Otherwise, put the following lines before $response->send(); in the index.php file in the Drupal root folder, and refresh the page.

try {
\Drupal::entityDefinitionUpdateManager()->applyUpdates();
}
catch (EntityStorageException $e) {
print_r($e);
}

The code should then be removed from the index.php file.

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Conclusion

To sum up we have now seen how to resolve the drupal Mismatched entity error with the support of our tech support team.