Ciao Nicolás

Welcome to OpenStreetMap.

In your first changeset here there are several issues, namely that you moved a hairdresser onto the tram line (Nicolás Valera) and that you've added bogus JSON-formatted data into the note-key of several stations of the tram line 8.
I thus reverted your changeset.
If you can explain us what you want to do, then you might try again :)

Have a good day,
habi