implemented exception behavior

lib/single-file/frame-tree.js

@@ -153,7 +153,10 @@ this.frameTree = this.frameTree || (() => {
 						});
 						docHelper.postProcessDoc(frameDoc, frameWindow, options);
 					} catch (error) {
-						/* ignored */
+						framesData.push({
+							windowId: frameWindowId,
+							processed: true
+						});
 					}
 				}