Deen Doughouz finally I upgraded my site and I had zero issues, it went all so good and clean. Thank you for the great update.
in Admin panel By mistake I clicked on Add new language button and added language key in it. Now I can not delete that language. I checked the folders as well I can not see anything there. I could have first select language and then add language key but I just clicked on add language button and added the key. Now I can not get rid of that. Any idea what I should do now ?