At least take the effort to put your own words through Google translate since you might noticed I don’t speak spanish?
Anyhow; it’s a hidden file (since it starts with a .). Go to your git root folder, show hidden files, open .gitignore in your favourite coding tool or most basic text editor.
I had the same problem 10 minutes ago and started Googling. No anwers found, but then it struck me.
In my .gitignore was an ignore on ‘vendor’m which should have been ‘/vendor’. IE: the plugins vendor folder was not added to the repo.
Hope that helps.