I attempted to upgrade my standalone confluence instance to 9.1.1, and get this error:
`Upgrade failed. Please consult the system logs for details. You will need to fix these problems, restore your database and confluence home directory to the pre upgrade state. Then retry the upgrade. Upgrade error message: Upgrade task com.atlassian.confluence.upgrade.upgradetask.LabelUniqueIndexUpgradeTask@14921b54 failed during the SCHEMA_UPGRADE phase due to: StatementCallback; bad SQL grammar [alter table LABEL add column OWNER_NOT_NULL VARCHAR(255) GENERATED ALWAYS AS (COALESCE(OWNER, '')) STORED]`
How do I resolve this?