'Openlayers - ol-ext: print dialog - add simple image to pop-up Legend

I am using this plugin https://viglino.github.io/ol-ext/examples/canvas/map.control.printdialog.html to generate well formatted print in openlayers. I would like to modify canvas.ol-legendImg by insert only one item as an image .png in the pop-up legend and not a legend made up of Style and Icon. How can I do? Report the original code:

// Legend
var legend = new ol.legend.Legend({ 
  title: 'Legend', 
  margin: 5,
  items: [{
    title: 'Church', 
    typeGeom: 'Point', 
    style: new ol.style.Style({ 
      image: new ol.style.Icon({ 
      src: 'https://upload.wikimedia.org/wikipedia/commons/thumb/4/49/Eglise_icone_2.svg/30px-Eglise_icone_2.svg.png',
      crossOrigin: 'anonymous' // Enable print
    })})
  }, { 
    title: 'Photo', 
    typeGeom: 'Point', 
    style: new ol.style.Style({ 
      image: new ol.style.Icon({ 
      src: 'https://upload.wikimedia.org/wikipedia/commons/thumb/d/d4/Icone_appareil_photo.svg/30px-Icone_appareil_photo.svg.png',
      crossOrigin: 'anonymous' // Enable print
    })})
  }, {
    title: 'Line', typeGeom: 'LineString', style: ol.style.Style.defaultStyle() 
  }, {
    title: 'Polygon', typeGeom: 'Polygon', style: ol.style.Style.defaultStyle() 
  }]
});

Thanks

openlayers


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