title: Laravel 5.8 and PHP version 7.3 - Cannot install spatie laravel-query-builder
body: <p>I'm running a <code>laravel-5.8</code>-application and I want to install the <code>spatie/laravel-query-builder</code>, but for some reason, when I run</p>
  <pre><code>composer require spatie/laravel-query-builder
  </code></pre>
  <p>I get some errors:</p>
  <blockquote>
  <p>Your requirements could not be resolved to an installable set of packages.</p>
  <p>Problem 1
  - Conclusion: remove laravel/framework v5.8.0
  - Conclusion: don't install laravel/framework v5.8.0
  - spatie/laravel-query-builder 3.2.0 requires illuminate/database ^6.0|^7.0|^8.0 -&gt; satisfiable by illuminate/database...</p>
  </blockquote>
  <p>And I have no clue why, since I do have requirements due to the documentation page <a href="https://spatie.be/docs/laravel-query-builder/v3/requirements" rel="nofollow noreferrer">https://spatie.be/docs/laravel-query-builder/v3/requirements</a> - I have PHP 7.3 and Laravel 5.8</p>
  <p>Can someone help me out?</p>