Hi,

I've updated to v4.1 and I'm using the latest version of the Gamma theme. My web server is NGINX.

When permalinks are enabled all seems to be working OK accept for when editing / deleting items, example URL: https://www.mysite.com/item/edit/146224/   gives a 404 error. If I disable permalinks all works OK.

My NGINX settings:

 location / {
   try_files $uri $uri/ /index.php?$query_string;
}

Can you suggest a solution?

Many thanks

@webcity
I've checked demo and it works properly:
https://demo.osclasspoint.com/item/edit/22/

There was no change regarding permalinks at all, try to reset them in permalinks setting.
This is not related to theme at all.