SGApp: unsupported operand type(s) for +: 'int' and 'NoneType'

2017-02-15 11:52:49.616 6711 ERROR dragonflow.controller.dispatcher [-] Dragonflow application 'SGApp' failed in add_security_group_rule
2017-02-15 11:52:49.616 6711 ERROR dragonflow.controller.dispatcher Traceback (most recent call last):
2017-02-15 11:52:49.616 6711 ERROR dragonflow.controller.dispatcher File "/opt/stack/new/dragonflow/dragonflow/controller/dispatcher.py", line 46, in dispatch
2017-02-15 11:52:49.616 6711 ERROR dragonflow.controller.dispatcher handler(*args, **kwargs)
2017-02-15 11:52:49.616 6711 ERROR dragonflow.controller.dispatcher File "/opt/stack/new/dragonflow/dragonflow/controller/sg_app.py", line 1057, in add_security_group_rule
2017-02-15 11:52:49.616 6711 ERROR dragonflow.controller.dispatcher self._install_security_group_rule_flows(secgroup_id, secgroup_rule)
2017-02-15 11:52:49.616 6711 ERROR dragonflow.controller.dispatcher File "/opt/stack/new/dragonflow/dragonflow/controller/sg_app.py", line 597, in _install_security_group_rule_flows
2017-02-15 11:52:49.616 6711 ERROR dragonflow.controller.dispatcher secgroup_id)
2017-02-15 11:52:49.616 6711 ERROR dragonflow.controller.dispatcher File "/opt/stack/new/dragonflow/dragonflow/controller/sg_app.py", line 779, in _get_secgroup_conj_id_and_priority
2017-02-15 11:52:49.616 6711 ERROR dragonflow.controller.dispatcher return sg_unique_key, (SG_PRIORITY_OFFSET + sg_unique_key)
2017-02-15 11:52:49.616 6711 ERROR dragonflow.controller.dispatcher TypeError: unsupported operand type(s) for +: 'int' and 'NoneType'
2017-02-15 11:52:49.616 6711 ERROR dragonflow.controller.dispatcher
2017-02-15 11:52:49.617 6711 ERROR dragonflow.db.db_consistent [-] Exception occurred whenhandling db comparison: unsupported operand type(s) for +: 'int' and 'NoneType'
2017-02-15 11:52:49.617 6711 ERROR dragonflow.db.db_consistent Traceback (most recent call last):
2017-02-15 11:52:49.617 6711 ERROR dragonflow.db.db_consistent File "/opt/stack/new/dragonflow/dragonflow/db/db_consistent.py", line 97, in _process_db_tables_comparison
2017-02-15 11:52:49.617 6711 ERROR dragonflow.db.db_consistent self.handle_data_comparison(topics, table, direct)
2017-02-15 11:52:49.617 6711 ERROR dragonflow.db.db_consistent File "/opt/stack/new/dragonflow/dragonflow/db/db_consistent.py", line 238, in handle_data_comparison
2017-02-15 11:52:49.617 6711 ERROR dragonflow.db.db_consistent self._get_and_compare_df_and_local_data(table, direct, topic)
2017-02-15 11:52:49.617 6711 ERROR dragonflow.db.db_consistent File "/opt/stack/new/dragonflow/dragonflow/db/db_consistent.py", line 234, in _get_and_compare_df_and_local_data
2017-02-15 11:52:49.617 6711 ERROR dragonflow.db.db_consistent table, df_objects, local_objects, direct)
2017-02-15 11:52:49.617 6711 ERROR dragonflow.db.db_consistent File "/opt/stack/new/dragonflow/dragonflow/db/db_consistent.py", line 218, in _compare_df_and_local_data
2017-02-15 11:52:49.617 6711 ERROR dragonflow.db.db_consistent 'create', df_object)
2017-02-15 11:52:49.617 6711 ERROR dragonflow.db.db_consistent File "/opt/stack/new/dragonflow/dragonflow/db/db_consistent.py", line 129, in _verify_object
2017-02-15 11:52:49.617 6711 ERROR dragonflow.db.db_consistent self.controller, table, 'create', df_object)
2017-02-15 11:52:49.617 6711 ERROR dragonflow.db.db_consistent File "/opt/stack/new/dragonflow/dragonflow/controller/df_db_objects_refresh.py", line 160, in process_object
2017-02-15 11:52:49.617 6711 ERROR dragonflow.db.db_consistent handler(argument)
2017-02-15 11:52:49.617 6711 ERROR dragonflow.db.db_consistent File "/opt/stack/new/dragonflow/dragonflow/controller/df_local_controller.py", line 354, in update_secgroup
2017-02-15 11:52:49.617 6711 ERROR dragonflow.db.db_consistent self._add_new_security_group(secgroup)
2017-02-15 11:52:49.617 6711 ERROR dragonflow.db.db_consistent File "/opt/stack/new/dragonflow/dragonflow/controller/df_local_controller.py", line 441, in _add_new_security_group
2017-02-15 11:52:49.617 6711 ERROR dragonflow.db.db_consistent self._add_new_security_group_rule(secgroup, new_rule)
2017-02-15 11:52:49.617 6711 ERROR dragonflow.db.db_consistent File "/opt/stack/new/dragonflow/dragonflow/controller/df_local_controller.py", line 452, in _add_new_security_group_rule
2017-02-15 11:52:49.617 6711 ERROR dragonflow.db.db_consistent secgroup, secgroup_rule)
2017-02-15 11:52:49.617 6711 ERROR dragonflow.db.db_consistent File "/opt/stack/new/dragonflow/dragonflow/controller/ryu_base_app.py", line 119, in notify_add_security_group_rule
2017-02-15 11:52:49.617 6711 ERROR dragonflow.db.db_consistent secgroup_rule=secgroup_rule)
2017-02-15 11:52:49.617 6711 ERROR dragonflow.db.db_consistent File "/opt/stack/new/dragonflow/dragonflow/controller/dispatcher.py", line 55, in dispatch
2017-02-15 11:52:49.617 6711 ERROR dragonflow.db.db_consistent raise exceptions.DFMultipleExceptions(errors)
2017-02-15 11:52:49.617 6711 ERROR dragonflow.db.db_consistent DFMultipleExceptions: unsupported operand type(s) for +: 'int' and 'NoneType'