Issue with empty string being passed to help parameter in argparser when using --help flag

[imanfs]

I'm getting the following IndexError when trying to run python main.py -h in my terminal:

Traceback (most recent call last):
  File "examples/nyu/main.py", line 105, in <module>
    params = parse_args(LibMTL_args)
  File "examples/nyu/main.py", line 20, in parse_args
    return parser.parse_args()
  File "/Users/iman/miniconda3/envs/libmtl/lib/python3.8/argparse.py", line 1774, in parse_args
    args, argv = self.parse_known_args(args, namespace)
  File "/Users/iman/miniconda3/envs/libmtl/lib/python3.8/argparse.py", line 1806, in parse_known_args
    namespace, args = self._parse_known_args(args, namespace)
  File "/Users/iman/miniconda3/envs/libmtl/lib/python3.8/argparse.py", line 2012, in _parse_known_args
    start_index = consume_optional(start_index)
  File "/Users/iman/miniconda3/envs/libmtl/lib/python3.8/argparse.py", line 1952, in consume_optional
    take_action(action, args, option_string)
  File "/Users/iman/miniconda3/envs/libmtl/lib/python3.8/argparse.py", line 1880, in take_action
    action(self, namespace, argument_values, option_string)
  File "/Users/iman/miniconda3/envs/libmtl/lib/python3.8/argparse.py", line 1050, in __call__
    parser.print_help()
  File "/Users/iman/miniconda3/envs/libmtl/lib/python3.8/argparse.py", line 2500, in print_help
    self._print_message(self.format_help(), file)
  File "/Users/iman/miniconda3/envs/libmtl/lib/python3.8/argparse.py", line 2484, in format_help
    return formatter.format_help()
  File "/Users/iman/miniconda3/envs/libmtl/lib/python3.8/argparse.py", line 286, in format_help
    help = self._root_section.format_help()
  File "/Users/iman/miniconda3/envs/libmtl/lib/python3.8/argparse.py", line 217, in format_help
    item_help = join([func(*args) for func, args in self.items])
  File "/Users/iman/miniconda3/envs/libmtl/lib/python3.8/argparse.py", line 217, in <listcomp>
    item_help = join([func(*args) for func, args in self.items])
  File "/Users/iman/miniconda3/envs/libmtl/lib/python3.8/argparse.py", line 217, in format_help
    item_help = join([func(*args) for func, args in self.items])
  File "/Users/iman/miniconda3/envs/libmtl/lib/python3.8/argparse.py", line 217, in <listcomp>
    item_help = join([func(*args) for func, args in self.items])
  File "/Users/iman/miniconda3/envs/libmtl/lib/python3.8/argparse.py", line 537, in _format_action
    parts.append('%*s%s\n' % (indent_first, '', help_lines[0]))
IndexError: list index out of range

I believe the reason is that the most recent weighting methods all have help=' ' passed as an argument to the _parser.add_argument function. I have removed the help argument and it works on my end.