Save failed with the following error: Unknown column 'metakey'

Hi,

I am receiving the following error when I am trying to save and edited event whilst using your plugin. Can you please advise?

Many thanks

Joomla 3.7.2
JEM 2.2.1

Hi, welcome on this forum, where users try to help other users. Please help us with giving more informations about your issues. We must understand your problem and try to reproduce. I can't reproduce your problem.
Is this on a clean joomla! 3.7.2 with only the official templates (like protostar). Or did you update from an old JEM?
There are meanwhile 2 more security updates and bug fixes from Joomla! (Please update to 3.7.4!) We don't want to find bugs on a unsecure Joomla! We can only help you with the latest version!
What do you mean with "plugin". Joomla makes a difference between the components (like JEM) and the modules and plugins inside of a component (like mod_jem or plg_jem_mailer).
Please discribe your procedure to come on this result!

Hi Jojo,
I will be upgrading Joomla this evening, with regards to plugin, I meant to say the main JEM component, when I try and edit an existing event.

Thank you.

Hi,

just to note: JEM does not use the word "metakey" anywhere. It seems there is a plugin, template or code modification expecting things not there.
I think it's a plugin reacting on onContentBeforeSave