Exception in NOMAD parser when run from the files directory

Running nomad parser OUTCAR (directly in the directory where the outcar is), results in an exception

Traceback (most recent call last):
  File "/Users/markus/Documents/Projects/nomad-fairdi/.pyenv/bin/nomad", line 12, in <module>
    sys.exit(run_cli())
  File "/Users/markus/Documents/Projects/nomad-fairdi/nomad/cli/cli.py", line 115, in run_cli
    return cli()  # pylint: disable=E1120,E1123
  File "/Users/markus/Documents/Projects/nomad-fairdi/.pyenv/lib/python3.7/site-packages/click/core.py", line 829, in __call__
    return self.main(*args, **kwargs)
  File "/Users/markus/Documents/Projects/nomad-fairdi/.pyenv/lib/python3.7/site-packages/click/core.py", line 782, in main
    rv = self.invoke(ctx)
  File "/Users/markus/Documents/Projects/nomad-fairdi/nomad/cli/cli.py", line 69, in invoke
    return super().invoke(ctx)
  File "/Users/markus/Documents/Projects/nomad-fairdi/.pyenv/lib/python3.7/site-packages/click/core.py", line 1259, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/Users/markus/Documents/Projects/nomad-fairdi/nomad/cli/cli.py", line 39, in invoke
    return super().invoke(ctx)
  File "/Users/markus/Documents/Projects/nomad-fairdi/.pyenv/lib/python3.7/site-packages/click/core.py", line 1066, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/Users/markus/Documents/Projects/nomad-fairdi/.pyenv/lib/python3.7/site-packages/click/core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "/Users/markus/Documents/Projects/nomad-fairdi/nomad/cli/cli.py", line 35, in lazy_callback
    return self.orig_callback(*args, **kwargs)
  File "/Users/markus/Documents/Projects/nomad-fairdi/nomad/cli/parse.py", line 123, in _parse
    entry_archive = parse(mainfile, **kwargs)
  File "/Users/markus/Documents/Projects/nomad-fairdi/nomad/cli/parse.py", line 50, in parse
    parser = parsers.match_parser(mainfile_path, strict=strict)
  File "/Users/markus/Documents/Projects/nomad-fairdi/nomad/parsing/parsers.py", line 116, in match_parser
    if parser.is_mainfile(mainfile_path, mime_type, buffer, decoded_buffer, compression):
  File "/Users/markus/Documents/Projects/nomad-fairdi/nomad/parsing/parser.py", line 189, in is_mainfile
    for sibling in self._ls(directory):
  File "/Users/markus/Documents/Projects/nomad-fairdi/nomad/parsing/parser.py", line 154, in <lambda>
    self._ls = lru_cache(maxsize=16)(lambda directory: os.listdir(directory))
FileNotFoundError: [Errno 2] No such file or directory: ''