Update FBXLoader.js

examples/jsm/loaders/FBXLoader.js

@@ -2538,6 +2538,11 @@ var FBXLoader = ( function () {
 									if ( modelID !== undefined ) {
 
 										var rawModel = fbxTree.Objects.Model[ modelID.toString() ];
+										
+										if (!rawModel) {
+											console.log("invalid rawModel", modelID, child);
+											return;
+										}
 
 										var node = {