<!DOCTYPE html>
<html>
<head>
	<title>Top level</title>
</head>
<body>
	<p>Top level</p>
	<iframe src="subframe.htm"></iframe>
	<iframe src="https://aninvalidpathtofail.lol/aaa.htm"></iframe>
</body>
</html>
<!DOCTYPE html>
<html>
<head>
	<title>Top level</title>
</head>
<body>
	<p>Top level</p>
	<iframe src="subframe.htm"></iframe>
	<iframe id="invalid"></iframe>
</body>
<script>
setTimeout(function() {
	document.querySelector("p").textContent = " - test";
	document.getElementById("invalid").src = "https://invalidpaththatdoesntexist.lol/aaa.htm";
}, 5000);
</script>
</html>
Make invalid path on a settimeout
Make invalid path on a settimeout
