--- orig/components/Lesson/LessonExercise/LessonExerciseItem/LessonExerciseItem.jsx	2021-10-11 20:29:07.983390638 -0300
+++ sources-gen/components/Lesson/LessonExercise/LessonExerciseItem/LessonExerciseItem.jsx	2021-10-11 14:15:46.480142077 -0300
@@ -91,12 +91,20 @@
           <MediaInputAudio data={data} />
         </div>
       );
+    // XXX: Here is the problem. These exercises return inputType == 'VIDEO'
+    // even though they don't have any videos (videos == []) causing some
+    // code that assumes that there is a video inside videos to fail
+    // (the MediaInputVideo component.)
     case 'VIDEO':
-      return (
-        <div className="input-header-video">
-          <MediaInputVideo data={data} />
-        </div>
-      );
+      // This "if" is our patch. If it isn't true, it fallsthrough to the default
+      // behaviour (returning null.)
+      if (data.content.videos.length > 0) {
+        return (
+          <div className="input-header-video">
+            <MediaInputVideo data={data} />
+          </div>
+        );
+      }
     default:
       return null;
   }