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Hi @kgfj, thanks for your message.
I think this looks like the plugin update has encountered a problem and finished in an incomplete state. I would first try manually deleting the Wordfence plugin directory in the plugins directory below:
~/wp-content/plugins/wordfence
All of your plugin settings will remain intact as they are stored in the database. You can then reinstall the plugin again on the WordPress > Plugins page.
Let me know how you get on!
Peter.
Thanks, that was indeed the case. Everything back to normal after a deinstall and reinstall.