Plugin Not Found Exception I am implementing REST in Drupal 8. I have created a custom plugin for REST resource, enabled the plugin and configured permissions for that REST endpoint.

After few days, I removed the code for plugin without disabling the REST endpoint. I am encountering a plugin not found function for that REST endpoint.

Following this Drupal\Component\Plugin\Exception\PluginNotFoundException: The &quot;glossify_taxonomy&quot; plugin does not exist., I made changes in the config and cache config table. Still I am encountering Plugin not found exception when I click on Permissions and Extend in Menu.

How can I remove this exception?
Could you try these steps


drush cex -y actual configs.
Find in your config folder yml file rest.resource.{YOUR_RESOURCE_NAME} and delete it.
drush cim -y this change, it will be correctly removed from DB.
drush cr for sure, and error will miss.


Some related discussion going here 
https://www.drupal.org/project/restui/issues/2889860