Hi, I am trying to upgrade glance from wallaby to xena. The package upgrade goes successful. Vut When I am doing database upgrade. Its showing me below error. Can you guys please advise on it. su -s /bin/bash glance -c "glance-manage db_upgrade" 2021-10-18 12:23:59.852 20534 DEBUG oslo_db.sqlalchemy.engines [-] MySQL server mode set to STRICT_TRANS_TABLES,STRICT_ALL_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,TRADITIONAL,NO_ENGINE_SUBSTITUTION _check_effective_sql_mode /usr/lib/python3/dist-packages/oslo_db/sqlalchemy/engines.py:314 2021-10-18 12:23:59.868 20534 CRITICAL glance [-] Unhandled error: TypeError: argument of type 'NoneType' is not iterable 2021-10-18 12:23:59.868 20534 ERROR glance Traceback (most recent call last): 2021-10-18 12:23:59.868 20534 ERROR glance File "/usr/bin/glance-manage", line 10, in <module> 2021-10-18 12:23:59.868 20534 ERROR glance sys.exit(main()) 2021-10-18 12:23:59.868 20534 ERROR glance File "/usr/lib/python3/dist-packages/glance/cmd/manage.py", line 557, in main 2021-10-18 12:23:59.868 20534 ERROR glance return CONF.command.action_fn() 2021-10-18 12:23:59.868 20534 ERROR glance File "/usr/lib/python3/dist-packages/glance/cmd/manage.py", line 385, in upgrade 2021-10-18 12:23:59.868 20534 ERROR glance self.command_object.upgrade(CONF.command.version) 2021-10-18 12:23:59.868 20534 ERROR glance File "/usr/lib/python3/dist-packages/glance/cmd/manage.py", line 127, in upgrade 2021-10-18 12:23:59.868 20534 ERROR glance self._sync(version) 2021-10-18 12:23:59.868 20534 ERROR glance File "/usr/lib/python3/dist-packages/glance/cmd/manage.py", line 176, in _sync 2021-10-18 12:23:59.868 20534 ERROR glance alembic_command.upgrade(a_config, version) 2021-10-18 12:23:59.868 20534 ERROR glance File "/usr/lib/python3/dist-packages/alembic/command.py", line 277, in upgrade 2021-10-18 12:23:59.868 20534 ERROR glance if ":" in revision: 2021-10-18 12:23:59.868 20534 ERROR glance TypeError: argument of type 'NoneType' is not iterable 2021-10-18 12:23:59.868 20534 ERROR glance However the db_sync was successful and below is the DB version detail. su -s /bin/bash glance -c "glance-manage db_version" 2021-10-18 12:25:14.780 20683 DEBUG oslo_db.sqlalchemy.engines [-] MySQL server mode set to STRICT_TRANS_TABLES,STRICT_ALL_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,TRADITIONAL,NO_ENGINE_SUBSTITUTION _check_effective_sql_mode /usr/lib/python3/dist-packages/oslo_db/sqlalchemy/engines.py:314 2021-10-18 12:25:14.783 20683 INFO alembic.runtime.migration [-] Context impl MySQLImpl. 2021-10-18 12:25:14.784 20683 INFO alembic.runtime.migration [-] Will assume non-transactional DDL. wallaby_contract01 su -s /bin/bash glance -c "glance-manage db_sync" 2021-10-18 12:25:25.773 20712 DEBUG oslo_db.sqlalchemy.engines [-] MySQL server mode set to STRICT_TRANS_TABLES,STRICT_ALL_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,TRADITIONAL,NO_ENGINE_SUBSTITUTION _check_effective_sql_mode /usr/lib/python3/dist-packages/oslo_db/sqlalchemy/engines.py:314 2021-10-18 12:25:25.776 20712 INFO alembic.runtime.migration [-] Context impl MySQLImpl. 2021-10-18 12:25:25.776 20712 INFO alembic.runtime.migration [-] Will assume non-transactional DDL. Database is up to date. No migrations needed. -- Regards, Syed Ammad Ali