🐞 MissingValueError on Guardian Decrypt

[lprichar]

Is there an existing issue for this?

• I have searched the existing issues

Current Behavior

Occasionally an error will occur when guardians are decrypting in the GUI. Here's the relevant logs and stack trace:

2022-08-03 15:40:32.342135 DEBUG Starting main app
2022-08-03 15:40:32.342135 DEBUG Verifying database connection
2022-08-03 15:40:32.866290 DEBUG Starting eel
2022-08-03 15:40:35.405347 DEBUG Watching database
2022-08-03 15:40:36.197479 DEBUG Stopping watch database
2022-08-03 15:40:36.871910 DEBUG exited watching database
2022-08-03 15:40:42.730435 DEBUG Watching database
2022-08-03 16:22:33.088349 DEBUG new delta found for decryptions 62ead908b514c0521b66bd33
2022-08-03 16:22:38.743689 DEBUG Stopping watch database
2022-08-03 16:22:38.810225 DEBUG watching decryption '62ead908b514c0521b66bd33'
2022-08-03 16:22:46.705829 INFO  S1: 2 decrypting  62ead908b514c0521b66bd33
2022-08-03 16:22:46.803114 DEBUG loading guardian from C:\Users\eg202\documents\code\electionguard-python\gui_private_keys\62ea94cab65249d79ddd6ad0\guardian_2.json
2022-08-03 16:22:49.369442 ERROR missing value for field "contests.ballot_selections.proof.proof_one_data"
Traceback (most recent call last):
  File "C:\Users\eg202\documents\code\electionguard-python\.venv\lib\site-packages\dacite\core.py", line 59, in from_dict
    field_data = data[field.name]
KeyError: 'proof_one_data'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\eg202\documents\code\electionguard-python\.venv\lib\site-packages\dacite\core.py", line 71, in from_dict
    value = get_default_value_for_field(field)
  File "C:\Users\eg202\documents\code\electionguard-python\.venv\lib\site-packages\dacite\dataclasses.py", line 21, in get_default_value_for_field
    raise DefaultValueNotFoundError()
dacite.dataclasses.DefaultValueNotFoundError

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\eg202\Documents\code\electionguard-python\src\electionguard_gui\components\view_decryption_component.py", line 98, in join_decryption
    self._decryption_s1_join_service.run(db, decryption)
  File "C:\Users\eg202\Documents\code\electionguard-python\src\electionguard_gui\services\decryption_stages\decryption_s1_join_service.py", line 24, in run
    ballots = self._ballot_upload_service.get_ballots(db, election.id)
  File "C:\Users\eg202\Documents\code\electionguard-python\src\electionguard_gui\services\ballot_upload_service.py", line 69, in get_ballots
    ballot = from_raw(SubmittedBallot, ballot_str)
  File "C:\Users\eg202\Documents\code\electionguard-python\src\electionguard\serialize.py", line 71, in from_raw
    return from_dict(type_, json.loads(raw), _config)
  File "C:\Users\eg202\documents\code\electionguard-python\.venv\lib\site-packages\dacite\core.py", line 63, in from_dict
    value = _build_value(type_=field.type, data=transformed_value, config=config)
  File "C:\Users\eg202\documents\code\electionguard-python\.venv\lib\site-packages\dacite\core.py", line 90, in _build_value
    return _build_value_for_collection(collection=type_, data=data, config=config)
  File "C:\Users\eg202\documents\code\electionguard-python\.venv\lib\site-packages\dacite\core.py", line 140, in _build_value_for_collection
    return data_type(_build_value(type_=item_type, data=item, config=config) for item in data)
  File "C:\Users\eg202\documents\code\electionguard-python\.venv\lib\site-packages\dacite\core.py", line 140, in <genexpr>
    return data_type(_build_value(type_=item_type, data=item, config=config) for item in data)
  File "C:\Users\eg202\documents\code\electionguard-python\.venv\lib\site-packages\dacite\core.py", line 92, in _build_value
    return from_dict(data_class=type_, data=data, config=config)
  File "C:\Users\eg202\documents\code\electionguard-python\.venv\lib\site-packages\dacite\core.py", line 63, in from_dict
    value = _build_value(type_=field.type, data=transformed_value, config=config)
  File "C:\Users\eg202\documents\code\electionguard-python\.venv\lib\site-packages\dacite\core.py", line 90, in _build_value
    return _build_value_for_collection(collection=type_, data=data, config=config)
  File "C:\Users\eg202\documents\code\electionguard-python\.venv\lib\site-packages\dacite\core.py", line 140, in _build_value_for_collection
    return data_type(_build_value(type_=item_type, data=item, config=config) for item in data)
  File "C:\Users\eg202\documents\code\electionguard-python\.venv\lib\site-packages\dacite\core.py", line 140, in <genexpr>
    return data_type(_build_value(type_=item_type, data=item, config=config) for item in data)
  File "C:\Users\eg202\documents\code\electionguard-python\.venv\lib\site-packages\dacite\core.py", line 92, in _build_value
    return from_dict(data_class=type_, data=data, config=config)
  File "C:\Users\eg202\documents\code\electionguard-python\.venv\lib\site-packages\dacite\core.py", line 63, in from_dict
    value = _build_value(type_=field.type, data=transformed_value, config=config)
  File "C:\Users\eg202\documents\code\electionguard-python\.venv\lib\site-packages\dacite\core.py", line 88, in _build_value
    return _build_value_for_union(union=type_, data=data, config=config)
  File "C:\Users\eg202\documents\code\electionguard-python\.venv\lib\site-packages\dacite\core.py", line 99, in _build_value_for_union
    return _build_value(type_=types[0], data=data, config=config)
  File "C:\Users\eg202\documents\code\electionguard-python\.venv\lib\site-packages\dacite\core.py", line 92, in _build_value
    return from_dict(data_class=type_, data=data, config=config)
  File "C:\Users\eg202\documents\code\electionguard-python\.venv\lib\site-packages\dacite\core.py", line 75, in from_dict
    raise MissingValueError(field.name)
dacite.exceptions.MissingValueError: missing value for field "contests.ballot_selections.proof.proof_one_data"
2022-08-03 16:22:57.093061 DEBUG Watching database
2022-08-03 16:22:59.142694 DEBUG Stopping watch database
2022-08-03 16:22:59.195905 DEBUG watching decryption '62ead908b514c0521b66bd33'
2022-08-03 16:23:02.423777 INFO  S1: 2 decrypting  62ead908b514c0521b66bd33
2022-08-03 16:23:02.516818 DEBUG loading guardian from C:\Users\eg202\documents\code\electionguard-python\gui_private_keys\62ea94cab65249d79ddd6ad0\guardian_2.json
2022-08-03 16:23:04.197407 ERROR missing value for field "contests.ballot_selections.proof.proof_one_pad"
Traceback (most recent call last):
  File "C:\Users\eg202\documents\code\electionguard-python\.venv\lib\site-packages\dacite\core.py", line 59, in from_dict
    field_data = data[field.name]
KeyError: 'proof_one_pad'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\eg202\documents\code\electionguard-python\.venv\lib\site-packages\dacite\core.py", line 71, in from_dict
    value = get_default_value_for_field(field)
  File "C:\Users\eg202\documents\code\electionguard-python\.venv\lib\site-packages\dacite\dataclasses.py", line 21, in get_default_value_for_field
    raise DefaultValueNotFoundError()
dacite.dataclasses.DefaultValueNotFoundError

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\eg202\Documents\code\electionguard-python\src\electionguard_gui\components\view_decryption_component.py", line 98, in join_decryption
    self._decryption_s1_join_service.run(db, decryption)
  File "C:\Users\eg202\Documents\code\electionguard-python\src\electionguard_gui\services\decryption_stages\decryption_s1_join_service.py", line 24, in run
    ballots = self._ballot_upload_service.get_ballots(db, election.id)
  File "C:\Users\eg202\Documents\code\electionguard-python\src\electionguard_gui\services\ballot_upload_service.py", line 69, in get_ballots
    ballot = from_raw(SubmittedBallot, ballot_str)
  File "C:\Users\eg202\Documents\code\electionguard-python\src\electionguard\serialize.py", line 71, in from_raw
    return from_dict(type_, json.loads(raw), _config)
  File "C:\Users\eg202\documents\code\electionguard-python\.venv\lib\site-packages\dacite\core.py", line 63, in from_dict
    value = _build_value(type_=field.type, data=transformed_value, config=config)
  File "C:\Users\eg202\documents\code\electionguard-python\.venv\lib\site-packages\dacite\core.py", line 90, in _build_value
    return _build_value_for_collection(collection=type_, data=data, config=config)
  File "C:\Users\eg202\documents\code\electionguard-python\.venv\lib\site-packages\dacite\core.py", line 140, in _build_value_for_collection
    return data_type(_build_value(type_=item_type, data=item, config=config) for item in data)
  File "C:\Users\eg202\documents\code\electionguard-python\.venv\lib\site-packages\dacite\core.py", line 140, in <genexpr>
    return data_type(_build_value(type_=item_type, data=item, config=config) for item in data)
  File "C:\Users\eg202\documents\code\electionguard-python\.venv\lib\site-packages\dacite\core.py", line 92, in _build_value
    return from_dict(data_class=type_, data=data, config=config)
  File "C:\Users\eg202\documents\code\electionguard-python\.venv\lib\site-packages\dacite\core.py", line 63, in from_dict
    value = _build_value(type_=field.type, data=transformed_value, config=config)
  File "C:\Users\eg202\documents\code\electionguard-python\.venv\lib\site-packages\dacite\core.py", line 90, in _build_value
    return _build_value_for_collection(collection=type_, data=data, config=config)
  File "C:\Users\eg202\documents\code\electionguard-python\.venv\lib\site-packages\dacite\core.py", line 140, in _build_value_for_collection
    return data_type(_build_value(type_=item_type, data=item, config=config) for item in data)
  File "C:\Users\eg202\documents\code\electionguard-python\.venv\lib\site-packages\dacite\core.py", line 140, in <genexpr>
    return data_type(_build_value(type_=item_type, data=item, config=config) for item in data)
  File "C:\Users\eg202\documents\code\electionguard-python\.venv\lib\site-packages\dacite\core.py", line 92, in _build_value
    return from_dict(data_class=type_, data=data, config=config)
  File "C:\Users\eg202\documents\code\electionguard-python\.venv\lib\site-packages\dacite\core.py", line 63, in from_dict
    value = _build_value(type_=field.type, data=transformed_value, config=config)
  File "C:\Users\eg202\documents\code\electionguard-python\.venv\lib\site-packages\dacite\core.py", line 88, in _build_value
    return _build_value_for_union(union=type_, data=data, config=config)
  File "C:\Users\eg202\documents\code\electionguard-python\.venv\lib\site-packages\dacite\core.py", line 99, in _build_value_for_union
    return _build_value(type_=types[0], data=data, config=config)
  File "C:\Users\eg202\documents\code\electionguard-python\.venv\lib\site-packages\dacite\core.py", line 92, in _build_value
    return from_dict(data_class=type_, data=data, config=config)
  File "C:\Users\eg202\documents\code\electionguard-python\.venv\lib\site-packages\dacite\core.py", line 75, in from_dict
    raise MissingValueError(field.name)
dacite.exceptions.MissingValueError: missing value for field "contests.ballot_selections.proof.proof_one_pad

Expected Behavior

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Steps To Reproduce

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Environment

- OS:

Anything else?

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