I've create a custom nintex action I'm trying to deploy it to my On-prem share point site. I've added the action assemblies to the Gac, Imported the nwa file and also adde the Configuration files (.aspx and .cs pages). I've restarted my IIS a couple of times. I can see my custom action on the site but when i try to add it to a workflow, nothing happens, it does not get attached to the work flow. Does anyone what the issue might be?