title: Leaflet Draw icons do not appear in production mode on Vue
body: <p>I have a Vue application using Leaflet as a map library. On the map, I've added a toolbar using Leaflet Draw and a button with Leaflet EasyButton. I give an image in order to illustrate below:</p>
  
  <p><strong>Development</strong></p>
  
  <p><a href="https://i.stack.imgur.com/lauW8.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/lauW8.png" alt="enter image description here"></a></p>
  
  <p>The problem has started to appear when I created a build version of my Vue application to save on my server. The Leaflet Draw icons do not appear anymore. Just the Leaflet EasyButton icon is showing.</p>
  
  <p><strong>Production</strong></p>
  
  <p><a href="https://i.stack.imgur.com/PuULq.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/PuULq.png" alt="enter image description here"></a></p>
  
  <p>My code is as follows:</p>
  
  <pre class="lang-js prettyprint-override"><code>  this.llmap = L.map('map-id', {...})
  
    let vectorLayerDraw = L.featureGroup([])
  
    this.llmap.addControl(new L.Control.Draw({
      position: 'topright',
      draw: {
        ...
        rectangle: {
          shapeOptions: {
            color: '#000000',
            opacity: 0.2,
            fillOpacity: 0.1
          }
        }
      },
      edit: {
        featureGroup: vectorLayerDraw,
        poly: {
          allowIntersection: false
        }
      }
    }))
  </code></pre>
  
  <p>Would anyone know what can be happening?</p>
  
  <p>Thank you in advance.</p>