Fix test

Author: Vlad0n20

osf_tests/test_archiver.py

@@ -558,10 +558,12 @@ def test_archive_success(self):
                 continue
             for file_response in response_block.response:
                 file_sha = file_response['file_hashes']['sha256']
-                originating_node = Guid.objects.get(_id=node_index[file_sha]).referent
-                parent_registration = originating_node.registrations.get()
-                assert originating_node._id not in file_response['file_urls']['html']
-                assert parent_registration._id in file_response['file_urls']['html']
+                if file_sha in node_index:
+                    originating_node = Guid.objects.get(_id=node_index[file_sha]).referent
+                    parent_registration = originating_node.registrations.get()
+                    assert originating_node._id not in file_response['file_urls']['html']
+                    assert parent_registration._id in file_response['file_urls']['html']
+
                 registration_files.add(file_sha)
 
         assert registration_files == set(selected_files.keys())