As you know last night Laravel 5.5 has been released officially.

This article is included two subjects:

1) Upgrading Laravel to v.5.5

2) Solving packages issues while upgrading

1. Upgrade laravel 5.4 to 5.5

I've made a short video of how to upgrade your laravel

Note: while your upgrade you could face some difficulties and receiving error about your packages that does not match with new version of laravel.

One of those packages is laravelcollective , I've faced the problem with this specific package and I want to show you how to solve the problem.

    2. Solving packages issues while upgrading

first of all open your CMD or any other terminal you use and enter these code one by one

composer dumpautoload
composer clearcache
php artisan clear-compiled

if the clear-compiled fails then make sure there are no references to IlluminateHtml in bootstrap/cache/config.php and run it again.

Remove all references to IlluminateHtml in config/app.php 
Remove the illuminate/html require in composer.json

Also don't forget to remove the same codes in you Config/app.php file. Then...

composer update

That's all you need to remove laravelcollective package from your application.

Note: If any other package gives you error this process is the same for all to remove them as well.