How i could to change this slug "discography" to "discografía" (in spanish)

http://prntscr.com/lh2zsj

With this article (https://cssigniter.ticksy.com/article/674) is not possible.. I have done what he says, but it does not work.

http://prntscr.com/lh31x1

Here you have the example

https://amsanjuan.es/discografia/ not run

https://amsanjuan.es/discography/ still ok

Thank

Look this, please.

The slug appears changed -> https://amsanjuan.es/discografia/40-anos-latiendo/ 

But the page not run -> https://amsanjuan.es/discografia/

Still running old page -> https://amsanjuan.es/discography/

I hope you can help me.

But i cannot to name the discography page.. or where i can to do it?

In the article only says how to change the slug in php file.

The only thing I've done has been to change the name in the php file and refresh the permanent links.

What I'm trying to tell you is that I did not create the discography page, I just installed the demo content and that url was already on the menu.

But it does not exist as a page, do you understand me?

Ok, in the explanatory article he said that only one line of code had to be changed.

http://prntscr.com/lilno0

Can you help me with the Post Type "events"? I have changed the slug for each simple event, but I can not change the slug for the event archive.

http://prntscr.com/liln31

Thanks a lot one more time.

You're right, my mistake this time. I did not expect that in this case if there was a page created as such, apologize! hehe

Thanks, Vasilis.