The stream or file "/var/www/html/public_html/storage/logs/laravel.log" could not be opened in append mode: failed to open stream: Permission denied code example

Example 1: storage/logs/laravel.log" could not be opened: failed to open stream: Permission denied

$ chmod -R 775 storage bootstrap/cache

Example 2: could not be opened in append mode: failed to open stream: Permission denied

sudo chown -R $USER:www-data storage
sudo chown -R $USER:www-data bootstrap/cache