php artisan -V
Laravel Framework version 5.1.45 (LTS)
composer require illuminate/html
Using version ^5.0 for illuminate/html
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Nothing to install or update
Package illuminate/html is abandoned, you should avoid using it. Use laravelcollective/html instead.
Writing lock file
Generating autoload files
Illuminate\Foundation\ComposerScripts::postUpdate
php artisan optimize
Generating optimized class loader
☁ laravelapp composer require laravelcollective/html
Using version ^5.3 for laravelcollective/html
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.
Problem 1
Installation request for laravelcollective/html ^5.3 -> satisfiable by laravelcollective/html[v5.3.0].
Conclusion: remove symfony/debug v2.7.23
Conclusion: don't install symfony/debug v2.7.23
laravelcollective/html v5.3.0 requires illuminate/view 5.3.* -> satisfiable by illuminate/view[v5.3.0, v5.3.16, v5.3.23, v5.3.4].
illuminate/view v5.3.0 requires symfony/debug 3.1.* -> satisfiable by symfony/debug[v3.1.0, v3.1.1, v3.1.2, v3.1.3, v3.1.4, v3.1.5, v3.1.6, v3.1.7, v3.1.8, v3.1.9].
illuminate/view v5.3.16 requires symfony/debug 3.1.* -> satisfiable by symfony/debug[v3.1.0, v3.1.1, v3.1.2, v3.1.3, v3.1.4, v3.1.5, v3.1.6, v3.1.7, v3.1.8, v3.1.9].
illuminate/view v5.3.23 requires symfony/debug 3.1.* -> satisfiable by symfony/debug[v3.1.0, v3.1.1, v3.1.2, v3.1.3, v3.1.4, v3.1.5, v3.1.6, v3.1.7, v3.1.8, v3.1.9].
illuminate/view v5.3.4 requires symfony/debug 3.1.* -> satisfiable by symfony/debug[v3.1.0, v3.1.1, v3.1.2, v3.1.3, v3.1.4, v3.1.5, v3.1.6, v3.1.7, v3.1.8, v3.1.9].
Can only install one of: symfony/debug[v3.1.0, v2.7.23].
Can only install one of: symfony/debug[v3.1.1, v2.7.23].
Can only install one of: symfony/debug[v3.1.2, v2.7.23].
Can only install one of: symfony/debug[v3.1.3, v2.7.23].
Can only install one of: symfony/debug[v3.1.4, v2.7.23].
Can only install one of: symfony/debug[v3.1.5, v2.7.23].
Can only install one of: symfony/debug[v3.1.6, v2.7.23].
Can only install one of: symfony/debug[v3.1.7, v2.7.23].
Can only install one of: symfony/debug[v3.1.8, v2.7.23].
Can only install one of: symfony/debug[v3.1.9, v2.7.23].
Installation request for symfony/debug (locked at v2.7.23) -> satisfiable by symfony/debug[v2.7.23].
Installation failed, reverting ./composer.json to its original content.
