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# T.safeParseAsync is not a function

139 views · 1 like · 2 posts


Angel Marinov (@angel-2048) · 2025-10-14 · ♥ 1

Hi,

in preview getting this error - ✗ Error: Type validation failed: Value: {“type”:“start”}. Error message: T.safeParseAsync is not a function. This is because AI SDK updated 10/10/2025 and now can’t preview. when you will update preview environment with latest libraries? On prod/live version works great.

Thanks

Angel


Jacob Paris (@jacobparis) · 2025-10-15

Can you try updating your zod to the latest version? This sounds like a mismatch between the AI SDK version of Zod and the rest of your project