tests/committee/test_registrations.py::test_deregister_candidate: The test failed in the call phase due to an exception - src/sidechain_main_cli.py:208: in handle_response response = json.loads(json_part) /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) During handling of the above exception, another exception occurred: tests/committee/test_registrations.py:74: in test_deregister_candidate result, next_status_epoch = api.deregister_candidate(candidate.name) src/substrate_api.py:338: in deregister_candidate txId, next_status_epoch = self.sidechain_main_cli.deregister_candidate( src/sidechain_main_cli.py:147: in deregister_candidate response = self.handle_response(result) src/sidechain_main_cli.py:212: in handle_response raise SidechainMainCliException(result.stdout) E src.sidechain_main_cli.SidechainMainCliException: (NotFoundInputUtxo "Couldn't find registration UTxO")