Why is there an error when running the gulp watch command?

Question

gulp.js

When running the gulp watch command, an error occurs
C:\myproject2>gulp watch
(node:4996) fs: re-evaluating native module sources is not supported. If you are
using the graceful-fs module, please update it to a more recent version.
program code
var gulp = require('gulp'),
sass = require('gulp-sass'),
browserSync = require('browser-sync');
gulp.task('styles', function(){ // Create "sass" task
return gulp.src('sass/*.sass') // Get source
.pipe(sass()) // Convert Sass to CSS with gulp-sass
.pipe(gulp.dest('app/css')) // Upload result to app/css
folder .pipe(browserSync.reload({stream:
gulp.task('browser-sync', function() { // Create task browser-sync
browserSync({ // Execute browser Sync
server: { // Define server parameters
baseDir: 'app' // Server directory - app
} ,
notify: false // Disable notifications
});
});
gulp.task('watch', ['browser-sync','styles'], function() {
gulp.watch('sass/*.sass', ['styles']); // Watching sass files
/ / Watch for other file types
});

Answer 1

What if you google? After all, there is enough information on the Internet on this error
. What version of node is it worth?