Laravel 5.6 incompatibility with LaravelCollective 5.4.0?

Question

Laravel

Hello.
When executing composer update the console returns this

composer update
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
    - Conclusion: remove laravel/framework v5.6.26
    - Conclusion: don't install laravel/framework v5.6.26
    - Conclusion: don't install laravel/framework v5.6.25
    - Conclusion: don't install laravel/framework v5.6.24
    - Conclusion: don't install laravel/framework v5.6.23
    - Conclusion: don't install laravel/framework v5.6.22
    - Conclusion: don't install laravel/framework v5.6.21
    - Conclusion: don't install laravel/framework v5.6.20
    - Conclusion: don't install laravel/framework v5.6.19
    - Conclusion: don't install laravel/framework v5.6.18
    - Conclusion: don't install laravel/framework v5.6.17
    - Conclusion: don't install laravel/framework v5.6.16
    - Conclusion: don't install laravel/framework v5.6.15
    - Conclusion: don't install laravel/framework v5.6.14
    - Conclusion: don't install laravel/framework v5.6.13
    - Conclusion: don't install laravel/framework v5.6.12
    - Conclusion: don't install laravel/framework v5.6.11
    - Conclusion: don't install laravel/framework v5.6.10
    - Conclusion: don't install laravel/framework v5.6.9
    - Conclusion: don't install laravel/framework v5.6.8
    - Conclusion: don't install laravel/framework v5.6.7
    - Conclusion: don't install laravel/framework v5.6.6
    - Conclusion: don't install laravel/framework v5.6.5
    - Conclusion: don't install laravel/framework v5.6.4
    - Conclusion: don't install laravel/framework v5.6.3
    - Conclusion: don't install laravel/framework v5.6.2
    - Installation request for laravelcollective/html 5.4.0 -> satisfiable by laravelcollective/html[v5.4].
    - Conclusion: don't install laravel/framework v5.6.1
    - Conclusion: don't install laravel/framework v5.6.0
    - laravelcollective/html v5.4 requires illuminate/routing 5.4.* -> satisfiable by laravel/framework[5.4.x-dev], illuminate/routing[5.4.x-dev, v5.4.0, v5.4.13, v5.4.17, v5.4.19, v5.4.27, v5.4.36, v5.4.9].
    - Can only install one of: laravel/framework[5.6.x-dev, 5.4.x-dev].
    - don't install illuminate/routing 5.4.x-dev|don't install laravel/framework 5.6.x-dev
    - don't install illuminate/routing v5.4.0|don't install laravel/framework 5.6.x-dev
    - don't install illuminate/routing v5.4.13|don't install laravel/framework 5.6.x-dev
    - don't install illuminate/routing v5.4.17|don't install laravel/framework 5.6.x-dev
    - don't install illuminate/routing v5.4.19|don't install laravel/framework 5.6.x-dev
    - don't install illuminate/routing v5.4.27|don't install laravel/framework 5.6.x-dev
    - don't install illuminate/routing v5.4.36|don't install laravel/framework 5.6.x-dev
    - don't install illuminate/routing v5.4.9|don't install laravel/framework 5.6.x-dev
    - Installation request for laravel/framework 5.6.* -> satisfiable by laravel/framework[5.6.x-dev, v5.6.0, v5.6.1, v5.6.10, v5.6.11, v5.6.12, v5.6.13, v5.6.14, v5.6.15, v5.6.16, v5.6.17, v5.6.18, v5.6.19, v5.6.2, v5.6.20, v5.6.21, v5.6.22, v5.6.23, v5.6.24, v5.6.25, v5.6.26, v5.6.3, v5.6.4, v5.6.5, v5.6.6, v5.6.7, v5.6.8, v5.6.9].

My composer .json looks like this

"require": {
        "php": "^7.1.3",
        "fideloper/proxy": "^4.0",
        "laravel/framework": "5.6.*",
        "laravel/tinker": "^1.0",
        "laravelrus/sleepingowl": "4.*@dev",
        "zizaco/entrust": "5.2.x-dev",
        "laravelcollective/html": "5.4.0"
    },

The forms themselves work, but this error is annoying me.

Answer 1

And someone forbids putting laravelcollective/html 5.6?