lightbox had a bad reference

extensions/amp-image-lightbox/0.1/amp-image-lightbox.js

@@ -39,7 +39,7 @@ import {
   layoutRectLtwh,
   moveLayoutRect,
 } from '../../../src/layout-rect';
-import {propagateAttributes} from '../../../src/core/dom/propagateAttributes';
+import {propagateAttributes} from '../../../src/core/dom/propagate-attributes';
 import {setStyles, toggle} from '../../../src/style';
 import {srcsetFromElement} from '../../../src/srcset';
 

test/unit/core/dom/test-propagate-attributes.js

@@ -0,0 +1,15 @@
+/**
+ * Copyright 2021 The AMP HTML Authors. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS-IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */