gulp plugin gulp-ruby-sass not compiling

Question

Gulp plugin gulp-ruby-sass(https://github.com/sindresorhus/gulp-ruby-sass) giving not compiling, the error message in terminal coming like this 👇

Error: must provide pattern

Here is the gulpfile.js details

var gulp = require('gulp'),
  uglify = require('gulp-uglify'),
    sass = require('gulp-ruby-sass');

    gulp.task('styles', function (argument) {
        gulp.src('sass/app.scss')
            .pipe(sass())
            .pipe(gulp.dest('css/'));
    });

Answer 1

The gulp-ruby-sass syntax has been changed:

instead of:                          it is now:

gulp.task('styles', function (){     gulp.task('styles', function (){
    gulp.src('sass/app.scss')            return 
        .pipe(sass())                        sass('sass/app.scss')
        .pipe(gulp.dest('css/')              .pipe(gulp.dest('css/')
    ;                                    ;
});                                  }); 

Please check it out and mark your problem as solved.