check validity of bounds before fitbound

src/mapviewer.js

@@ -146,7 +146,7 @@ MapViewer.prototype.cacheData = function (layerName, url) {
         return self.gData[url]
       }()
     case 'object':
-      this.gData[hashCode(JSON.stringify(url))] = url
+      // this.gData[hashCode(JSON.stringify(url))] = url
       // TODO: Reload all layers that use this data
       // This part will make mapviewer data reactive
       return async function () {
@@ -569,7 +569,8 @@ MapViewer.prototype.zoomHandler = function (layerName, minZoom, maxZoom) {
 */
 MapViewer.prototype.fitToLayer = function (layerName, options = this.options.fitbounds) {
   var layer = typeof (layerName) == 'string' ? this.gLayers[layerName] : layerName
-  this.map.fitBounds(layer.getBounds(), options)
+  if (layer.getBounds().isValid())
+    this.map.fitBounds(layer.getBounds(), options)
 }
 
 function dataOrURL(conf) {