gulp.task('styles', ['images'], function (){ var postCssOpts = [ assets({loadPaths: ['images/']}), autoprefixer({browsers: ['last 2 versions', '>2%']}), cssnano() ]; return gulp.src([ '/src/sass/materialize.scss', './src/style.sccs' ]) .pipe(sass()) .pipe(postcss(postCssOpts)) .pipe(concat('unitedconstructions.css')) .pipe(gulp.dest('./public/css')); });

After running gulp styles, it finishes the task but does not create test file and there are no errors.