CONLL to Prodigy

I am looking for a way to convert from CONLL format NER annotations to the JSONL format used in Prodigy, to re-annotate a pre-existing dataset. I used the convert function in CLI for Spacy, but that does not seem to be useful for loading the annotations into Prodigy interface. Is there a pre-existing way to do this?

Edit: I found a ner.iob-to-gold in Prodigy recipes. However, that throws me the following error:

C:\Users\svajjala\Downloads\Prodigy>python -m prodigy ner.iob-to-gold good_preds_premanual.iob
Traceback (most recent call last):
  File "C:\Users\svajjala\Python36\lib\", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "C:\Users\svajjala\Python36\lib\", line 85, in _run_code
    exec(code, run_globals)
  File "C:\Users\svajjala\Python36\lib\site-packages\prodigy\", line 259, in <module>
    controller = recipe(*args, use_plac=True)
  File "cython_src\prodigy\core.pyx", line 167, in prodigy.core.recipe.recipe_decorator.recipe_proxy
  File "C:\Users\svajjala\Python36\lib\site-packages\", line 328, in call
    cmd, result = parser.consume(arglist)
  File "C:\Users\svajjala\Python36\lib\site-packages\", line 207, in consume
    return cmd, self.func(*(args + varargs + extraopts), **kwargs)
  File "C:\Users\svajjala\Python36\lib\site-packages\prodigy\recipes\", line 636, in iob_to_gold
    output_loc = sys.stdout
NameError: name 'sys' is not defined

Sorry about this bug, and thanks for reporting it. It should be fixed in v5.1.