# Migration error

**URL:** <https://forum.mautic.org/t/migration-error/26979>\
**Category:** Mautic 4 Install/Upgrade Support\
**Created:** [February 8, 2023, 3:32pm UTC](https://forum.mautic.org/t/migration-error/26979 "2023-02-08T15:32:03Z")\
**Posts on this page:** 1\
**Showing post:** 6

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**Author:** ![modifiedcontent](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/modifiedcontent/32/511_2.png) [@modifiedcontent](https://forum.mautic.org/u/modifiedcontent)\
**Post date:** [February 18, 2023, 2:43pm UTC](https://forum.mautic.org/t/migration-error/26979/6 "2023-02-18T14:43:17Z")

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Isn’t this the [same issue](https://forum.mautic.org/t/as-usual-upgrade-to-4-2-2-this-time-effed-up-my-installation/24106/5) that I and others have reported about last year? Involving oauth2\_accesstokens, foreign keys, indexes, etc.

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