Error while upgrade ojs 3.0 to 3.2.1

hi all, i need help, i try to upgrade my ojs from 3.0 to 3.2.1, however there is error like this
PHP Fatal error: Uncaught Exception: DB Error: Duplicate entry ‘441-id_ID-preferredPublicName’ for key ‘author_settings_pkey’ Query: INSERT INTO author_settings (author_id, locale, setting_name, setting_value, setting_type) VALUES (?, ?, ‘preferredPublicName’, ?, ‘string’) in C:\xampp\htdocs\ejournalfpikunipa\lib\pkp\classes\db\
Stack trace:
could anyone help me please?

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Thank you… it is already solved by my friends…

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solved by deleting table users_tmp, review_assignments_tmp, and authors_tmp in my database before upgrading it.

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