Can't install and run application

[kordix]

When I try to install it shows
Class 'Laravel\Dusk\DuskServiceProvider' not found
I try to install Dusk but then it shows:

Problem 1
- Installation request for laravel/dusk 2.0 -> satisfiable by laravel/dusk[v2.0.0].
- Conclusion: remove laravel/framework v5.4.25
- Conclusion: don't install laravel/framework v5.4.25
- laravel/dusk v2.0.0 requires illuminate/support ~5.5 -> satisfiable by illuminate/support[5.7.17, 5.7.18, 5.7.19, v5.5.0, v5.5.16, v5.5.17, v5.5.2, v5.5.28, v5.5.33, v5.5.34, v5.5.35, v5.5.36, v5.5.37, v5.5.39, v5.5.40, v5.5.41, v5.5.43, v5.5.44, 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, v5.6.19, v5.6.2, v5.6.20, v5.6.21, v5.6.22, v5.6.23, v5.6.24, v5.6.25, v5.6.26, v5.6.27, v5.6.28, v5.6.29, v5.6.3, v5.6.30, v5.6.31, v5.6.32, v5.6.33, v5.6.34, v5.6.35, v5.6.36, v5.6.37, v5.6.38, v5.6.39, v5.6.4, v5.6.5, v5.6.6, v5.6.7, v5.6.8, v5.6.9, v5.7.0, v5.7.1, v5.7.10, v5.7.11, v5.7.15, v5.7.2, v5.7.3, v5.7.4, v5.7.5, v5.7.6, v5.7.7, v5.7.8, v5.7.9].
- illuminate/support 5.7.17 conflicts with laravel/framework[v5.4.25].
- illuminate/support 5.7.18 conflicts with laravel/framework[v5.4.25].
- illuminate/support 5.7.19 conflicts with laravel/framework[v5.4.25].
- don't install illuminate/support v5.5.0|don't install laravel/framework v5.4.25
- don't install illuminate/support v5.5.16|don't install laravel/framework v5.4.25

[hamdani96]

i see the same errors