Check for null in "fetch a modulepreload module script graph"

You can't "fetch the descendants of and link" null.

source

@@ -86771,7 +86771,7 @@ interface <dfn>ApplicationCache</dfn> : <span>EventTarget</span> {
    these steps.</p></li>
 
    <li>
-    <p>Optionally, perform the following steps:</p>
+    <p>If <var>result</var> is not null, optionally perform the following steps:</p>
 
     <ol>
      <li><p>Let <var>visited set</var> be « <var>url</var> ».</p></li>
@@ -121229,6 +121229,7 @@ INSERT INTERFACES HERE
   Daniel Brumbaugh Keeney,
   Daniel Buchner,
   Daniel Cheng,
+  Daniel Clark, <!-- dandclark on GitHub -->
   Daniel Davis,
   Daniel Ehrenberg,
   Daniel Glazman,