const pbfUrl2 = "http://localhost:8086/data/dizai1228/{z}/{x}/{y}.pbf";

	var vectorTileOptions2 = {
		 layerURL: pbfUrl2,
		 rendererFactory: L.svg.tile,           
		 tms: false, 
		 interactive: true,	//开启VectorGrid触发mouse/pointer事件
		 vectorTileLayerStyles: vectorTileStyling,
		 getFeatureId: function(f) {
			return f.properties.LineUid;
		}
	 };      

var vectorTile2 = new L.vectorGrid.protobuf(pbfUrl2, vectorTileOptions2).addTo(map);
	
	vectorTile2.on('mouseover', function (e) {    
		var properties = e.layer.properties; 
		//console.log(properties);
		L.popup()
		 .setContent(properties.名称 + "<br/>" + properties.灾害类 + "<br/>" + properties.地理位)
		 .setLatLng(e.latlng)
		 .openOn(map);  
	});

Point Symbolizer instances inherit from marker or circlemarker, but they lack latlng information, and on mouseover or click, leaflet will error on these features if it finds the getLatLng method, since that indicates it should be treated as a real marker instance, but even though the method is there, the value isn't, so leaflet produces an error.

Maybe these instance should have a latlng, I don't know, this was just an easy fix so that I could continue to use vectorgrid protobuf support with points and have mouseover and click events work.

点符号化器实例继承自标记或circlemarker，但它们缺乏定位信息，当鼠标悬停或单击时，如果传单找到getLatLng方法，它将在这些功能上出错，因为这表明它应该被视为真正的标记实例，但即使该方法存在，值也不存在，因此传单会产生错误。

也许这些实例应该有一个平台，我不知道，这只是一个简单的修复，这样我就可以继续使用vectorgrid protobuf对点的支持，并让鼠标悬停和点击事件正常工作。

_createLayer: function(feat, pxPerExtent, layerStyle) {
		var layer;
		switch (feat.type) {
		case 1:
			layer = new PointSymbolizer(feat, pxPerExtent);
			break;
		case 2:
			layer = new LineSymbolizer(feat, pxPerExtent);
			break;
		case 3:
			layer = new FillSymbolizer(feat, pxPerExtent);
			break;
		}

		if (this.options.interactive) {
			layer.addEventParent(this);
		}

		return layer;
	},