fix #12662

src/assets/js/map-util.js

@@ -49,7 +49,7 @@ L.TileLayer.BetterWMS = L.TileLayer.WMS.extend({
 
   getFeatureInfo: function (evt) {
     if (this.wmsParams.basemapId != undefined) {
-      const queryableLayerSelected = document.getElementById(`queryable-layers-selector-${this.wmsParams.basemapId}`).getElementsByClassName('selected')[0].innerHTML;
+      const queryableLayerSelected = document.getElementById(`queryable-layers-selector-${this.wmsParams.basemapId}`).getElementsByClassName('selected')[0].textContent;
       if (queryableLayerSelected.trim() === this.wmsParams.title.trim()) {
         // Make an AJAX request to the server and hope for the best
         var params = this.getFeatureInfoUrl(evt.latlng);