Renaming a webform handler – old class stuck in DB despite clearing cache


I’m creating a custom webform handler plugin based on the advice here, adding the class, in the correct directory, to an existing module.

I got the class name / some of the docblock info wrong initially – and need to change it. Having run drush cr, the listing on /admin/structure/webform/config/handlers seems to be stuck on the old entry.

I get “Cannot declare class … because the name is already in use” errors when trying to add the handler to the form, for a class name that I’m no longer using, and which, having cleared the cache, definitely isn’t in cache_discovery.webform_handler_plugins in the DB.

I’ve also swapped browsers.

What am I missing?

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