Fix path separator issues.

Author: JoeZiminski

tests/tests_transfers/local_filesystem/test_transfer.py

@@ -780,7 +780,7 @@ def test_errors_are_caught_and_logged(self, project):
 
         log = test_utils.read_log_file(project.cfg.logging_path)
 
-        assert errors["file_names"][0] in log
+        assert str(Path(errors["file_names"][0])) in log
         assert "Errors were detected!" in log
         assert error_message in log