# UnexpectedDataType error after upgrading to the new version of Appfarm

**URL:** <https://community.appfarm.io/t/unexpecteddatatype-error-after-upgrading-to-the-new-version-of-appfarm/979>\
**Category:** Bug reports\
**Created:** [January 15, 2024, 10:30am UTC](https://community.appfarm.io/t/unexpecteddatatype-error-after-upgrading-to-the-new-version-of-appfarm/979 "2024-01-15T10:30:40Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![Jonas](https://dub1.discourse-cdn.com/flex013/user_avatar/community.appfarm.io/jonas/32/17_2.png) [@Jonas](https://community.appfarm.io/u/Jonas)\
**Post date:** [January 17, 2024, 2:30pm UTC](https://community.appfarm.io/t/unexpecteddatatype-error-after-upgrading-to-the-new-version-of-appfarm/979/5 "2024-01-17T14:30:34Z")

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We were struggling with this same issue, several of our endpoints crashed and it took us some time to understand why. Would be nice with some kind of notification when new releases affect old code.

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_[View the full topic](https://community.appfarm.io/t/unexpecteddatatype-error-after-upgrading-to-the-new-version-of-appfarm/979)._