Why does php artisan commands don't work after composer update

Question

I'm using Laravel 5.4, I ran composer update to update to the latest version which is 5.4.27. When i tried to run my server with the command php artisan serve, it doesn't work and I keep getting this error on all the php artisan commands [ErrorException] file_put_contents(/bootstrap/cache/ services.php): failed to open stream: Permission denied

Answer 1

The problem is that artisan can't write to 'bootstrap/cache/services.php' You can fix this issue by changing the permissions using chmod:

# chmod 664 bootstrap/cache/services.php

Also, don't forget to set the right owner/group of this file (probably www-data):

# chgrp www-data bootstrap/cache/services.php