title: Laravel Mime Type Validation (KML file)
body: <p>I have an file upload on my form with a validation rule to check that it's a kml file:</p>
  
  <pre><code>return [
          'file' =&gt; 'required|mimes:kml',
          ...
      ];
  </code></pre>
  
  <p>However, when I upload a .kml file I get an 'The file must be a file of type: kml.' error.</p>
  
  <p>Other than the file extension where else is the mime type being defined?</p>