tests/committee/test_committee.py::TestCommitteeDistribution::test_epoch_committee_ratio_complies_with_dparam: The test failed in the call phase - tests/committee/test_committee.py:117: in test_epoch_committee_ratio_complies_with_dparam p_candidates_available = api.get_permissioned_candidates(mc_epoch, valid_only=True) src/substrate_api.py:523: in get_permissioned_candidates candidates = self.partner_chain_rpc.partner_chain_get_ariadne_parameters(mc_epoch).result[ E TypeError: 'NoneType' object is not subscriptable

tests/committee/test_committee.py::TestCommitteeDistribution::test_mc_epoch_committee_participation_total_number: The test failed in the call phase - tests/committee/test_committee.py:187: in test_mc_epoch_committee_participation_total_number assert api.get_committee_seats(mc_epoch) * pc_epochs_in_mc_epoch_count == actual_total_attendance src/substrate_api.py:576: in get_committee_seats d_param = self.get_d_param(mc_epoch) src/substrate_api.py:582: in get_d_param response = self.partner_chain_rpc.partner_chain_get_ariadne_parameters(mc_epoch).result["dParameter"] E TypeError: 'NoneType' object is not subscriptable