Erro upgrade 3.3.0-17 to 3.4.0-7

[kerimsarigul]

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OJS upgrade error from 3.3.0.15 to 3.4.0-0

Hi, I am trying to upgrade from 3.3.0.15 to 3.4.0-0 but get an error: 2023-12-01 12:02:47 [migration: PKP\migration\upgrade\v3_4_0\I7249_UpdateUsersUniqueIndex] 2023-12-01 12:02:47 [revert migration: APP\migration\upgrade\v3_4_0\I7470_FixDeprecatedFileStage] 2023-12-01 12:02:47 [downgrade for “APP\migration\upgrade\v3_4_0\I7470_FixDeprecatedFileStage” unsupported: Downgrade not supported] ERROR: Upgrade failed: DB: SQLSTATE[42704]: Undefined object: 7 ERROR: constraint “users_username” of …