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Jacob Paris We're working on a fix for this Zod 4 was published yesterday and v0 switched automatically to using it because it uses "zod": "latest" But the AI SDK has a dependency on zod-to-json-schema which has not updated to Zod 4 yet and is incompatible, so you get this error The fastest unblock would be to download/git sync your code and manually downgrade zod, then deploy through CLI/Vercel We'll get this fixed on our end as soon as we can
Simon Thanks Jacob. It ended up being the MCP SDK forcing the Zod 4 dependency. Luckily we didn't really need it for what we were doing so we able to find another way and were able to remove it which fied our deployment issue.
