The output.txt file is created, but the gulp task don't run, i have tried any other ways but the same result

GUI Command - Mac OS
Command:/Applications/XAMPP/xamppfiles/htdocs/cative/wp-content/themes/cative/gulp/gulp.sh

------------- shell ------------

First try:

#!/usr/bin/env bash

cd /Applications/XAMPP/xamppfiles/htdocs/cative/wp-content/themes/cative/gulp/ && npm run assistir

exec > output.txt 2>&1

Second try:

#!/usr/bin/env bash

cd /Applications/XAMPP/xamppfiles/htdocs/cative/wp-content/themes/cative/gulp/ && gulp assistir

exec > output.txt 2>&1