# Migrations-Assistent bringt plötzlich Fehlermeldung "json\_decode(): Argument #1 ($json) must be of type string, null given"

**URL:** <https://forum.shopware.com/t/migrations-assistent-bringt-ploetzlich-fehlermeldung-json-decode-argument-1-json-must-be-of-type-string-null-given/106228>\
**Category:** Administration\
**Created:** [8. Januar 2025 um 13:15 UTC](https://forum.shopware.com/t/migrations-assistent-bringt-ploetzlich-fehlermeldung-json-decode-argument-1-json-must-be-of-type-string-null-given/106228 "2025-01-08T13:15:32Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![frip-tech.de](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.shopware.com/frip-tech.de/32/24453_2.png) [@frip-tech.de](https://forum.shopware.com/u/frip-tech.de)\
**Post date:** [13. Januar 2025 um 10:56 UTC](https://forum.shopware.com/t/migrations-assistent-bringt-ploetzlich-fehlermeldung-json-decode-argument-1-json-must-be-of-type-string-null-given/106228/3 "2025-01-13T10:56:41Z")

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Kommt auch bei Updates vor, falls das hilft: [Shopware 6 API: Fehler "fromHexToBytes(): Argument #1 ($uuid) must be of type string, null given"](https://forum.shopware.com/t/shopware-6-api-fehler-fromhextobytes-argument-1-uuid-must-be-of-type-string-null-given/106031)

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