tests/test_smoke.py::TestSmoke::test_get_params: The test failed in the call phase - tests/test_smoke.py:99: in test_get_params assert params["chainId"] == config.chain_id, "Chain ID mismatch" E TypeError: 'NoneType' object is not subscriptable

tests/committee/test_registrations.py::test_register_candidate: The test failed in the call phase - tests/committee/test_registrations.py:23: in test_register_candidate result, next_status_epoch = api.register_candidate(candidate.name) src/substrate_api.py:312: in register_candidate signatures = self.sidechain_main_cli.get_signatures( src/sidechain_main_cli.py:80: in get_signatures raise e src/sidechain_main_cli.py:65: in get_signatures registration_signatures = json.loads(result.stdout) /usr/local/lib/python3.10/json/__init__.py:346: in loads return _default_decoder.decode(s) /usr/local/lib/python3.10/json/decoder.py:337: in decode obj, end = self.raw_decode(s, idx=_w(s, 0).end()) /usr/local/lib/python3.10/json/decoder.py:355: in raw_decode raise JSONDecodeError("Expecting value", s, err.value) from None E json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)