Gulp doesn't understand html with different name?

Question

css

Started using galp, everything was ok. But when you need to work with a file (watch) whose name is different from index.html, it does not show the page. Returns "Cannot GET". With what it can be connected?

gulp.task('watch', ['browser-sync', 'css-libs', 'scripts'], function() {
    gulp.watch('app/sass/**/*.scss', ['sass'], browserSync.reload); 
    gulp.watch('app/*.html', browserSync.reload);
    gulp.watch('app/js/**/*.js', browserSync.reload);
});

Answer 1

gulp.watch('app/**/*.html', browserSync.reload);
Did it help?