Error compiling partial files with sass

Good colleagues, I'm having a problem with the Ruby prompt when working with sass. I'm working on partial files with the @import here-the-imported

I had never happened to search Google but I could not find the answer I'm looking for

>>> Sass is watching for changes. Press Ctrl-C to stop.
      error styles.scss (Line 2: Invalid CSS after "@import ": expected file to
import (string or url()), was "generales")

Imported like this

@import generales
@import header
@import main
@import footer
@import responsive