Fix when frontmatter output format is not set

		yaml.add_representer(dict, lambda self, data: yaml.representer.SafeRepresenter.represent_dict(self, data.items()))

		# get output format and output file

		match args.frontMatterOutFormat:

		# Ensure we have a valid format, defaulting to 'yaml' if not set

		format = getattr(args, 'frontMatterOutFormat', 'yaml')

		if format is None:

			format = 'yaml'

		match format:

			case 'json':

				if args.frontMatterOutFile:

					if args.verbose: