I can't install voyager, how to fix the error?

Question

Composer

I'm trying to connect voyager using the command composer require tcg/voyager;
An error comes out:

Using version ^1.4 for tcg/voyager
./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
    - Conclusion: don't install laravel/framework v5.4.36
    - tcg/voyager v1.4.0 requires illuminate/support ~6.0|~7.0 -> satisfiable by illuminate/support[v6.0.0, v6.0.1, v6.0.2, v6.0.3, v6.0.4, v6.1.0, v6.10.0, v6.11.0, v6.12.0, v6.13.0, v6.13.1, v6.14.0, v6.15.0, v6.15.1, v6.16.0, v6.17.0, v6.17.1, v6.18.0, v6.18.1, v6.18.10, v6.18.11, v6.18.12, v6.18.13, v6.18.14, v6.18.15, v6.18.16, v6.18.17, v6.18.18, v6.18.19, v6.18.2, v6.18.20, v6.18.21, v6.18.22, v6.18.23, v6.18.24, v6.18.25, v6.18.26, v6.18.27, v6.18.28, v6.18.29, v6.18.3, v6.18.30, v6.18.31, v6.18.32, v6.18.33, v6.18.34, v6.18.35, v6.18.36, v6.18.37, v6.18.38, v6.18.39, v6.18.4, v6.18.40, v6.18.5, v6.18.6, v6.18.7, v6.18.8, v6.18.9, v6.2.0, v6.3.0, v6.4.1, v6.5.0, v6.5.1, v6.5.2, v6.6.0, v6.6.1, v6.6.2, v6.7.0, v6.8.0, v7.0.0, v7.0.1, v7.0.2, v7.0.3, v7.0.4, v7.0.5, v7.0.6, v7.0.7, v7.0.8, v7.1.0, v7.1.1, v7.1.2, v7.1.3, v7.10.0, v7.10.1, v7.10.2, v7.10.3, v7.11.0, v7.12.0, v7.13.0, v7.14.0, v7.14.1, v7.15.0, v7.16.0, v7.16.1, v7.17.0, v7.17.1, v7.17.2, v7.18.0, v7.19.0, v7.19.1, v7.2.0, v7.2.1, v7.2.2, v7.20.0, v7.21.0, v7.22.0, v7.22.1, v7.22.2, v7.22.3, v7.22.4, v7.23.0, v7.23.1, v7.23.2, v7.24.0, v7.25.0, v7.26.0, v7.26.1, v7.27.0, v7.28.0, v7.28.1, v7.28.2, v7.3.0, v7.4.0, v7.5.0, v7.5.1, v7.5.2, v7.6.0, v7.6.1, v7.6.2, v7.7.0, v7.7.1, v7.8.0, v7.8.1, v7.9.0, v7.9.1, v7.9.2].

Answer 1

Apparently Laravel itself is not installed or the wrong version of Laravel is installed.