[Error: Failed to find Server Action "{ID}" | Next.js | Page 1

arctic gyro May 13, 2025, 5:23 PM

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How can I fix this in production - it works fine in staging but is failing in production. It gives me a server action ID but I don't know how to match it.

The help page linked (link) is a little vague.

Any help appreciated!

wintry urchinBOT May 13, 2025, 5:23 PM

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steady wing May 13, 2025, 5:24 PM

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Are you scaling your application to multiple instances or is it just a single instance? How are you hosting?

arctic gyro May 13, 2025, 5:28 PM

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Hi @steady wing - I'm on Vercel as a basic (hobby) plan.

steady wing May 13, 2025, 5:29 PM

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Which version of Next.js are you using?

arctic gyro May 13, 2025, 5:32 PM

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"next": "^15.3.2"

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A full build works locally (and as I stay dev is fine) but this error is filling my logs.

steady wing May 13, 2025, 5:35 PM

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You should maybe test one or two prior patch versions to see if it's a regression. Sadly, I can't help you otherwise, the possible causes I was familiar with are not really relevant in your case.

arctic gyro May 13, 2025, 5:38 PM

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So try a different Next version? OK, I can do that I think 🙂

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Thanks for your help!

arctic gyro May 13, 2025, 6:06 PM

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ugh, that hasn't helped - thanks though!

Any ideas how I can debug - I don't have much to go on.

toxic swift May 13, 2025, 11:03 PM

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can you share that error you see

arctic gyro May 14, 2025, 11:03 AM

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OK, after 24 hours those errors have now stopped.

This was the error:
[Error: Failed to find Server Action "004855739b175147fe491e0ebc084243712e0b6fa5". This request might be from an older or newer deployment. Read more: https://nextjs.org/docs/messages/failed-to-find-server-action]

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The guidance says I can add a NEXT_SERVER_ACTIONS_ENCRYPTION_KEY which is cool but I don't really understand the "This variable must be AES-GCM encrypted" part?

It's just a string right? or am I meant to encrypt a specific key?

finite ember May 14, 2025, 12:25 PM

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since you use vercel you can just use skew protection https://nextjs.org/docs/messages/failed-to-find-server-action#:~:text=If you are deploying your Next.js application to Vercel%2C you can use the feature Skew Protection to ensure assets and functions from the previous version are still available%2C even after a new version is deployed.

arctic gyro May 15, 2025, 8:30 AM

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Thanks @finite ember but we're not currently on a Pro plan so can't enable skew protection.

finite ember May 15, 2025, 8:35 AM

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arctic gyro The guidance says I can add a `NEXT_SERVER_ACTIONS_ENCRYPTION_KEY` which is cool...

hmm yeah it is just a string indeed

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although i suggest you read this thread in its entirety https://github.com/vercel/next.js/issues/75541

GitHub

Client cannot recover from version skew · Issue #75541 · vercel/n...

Link to the code that reproduces this issue https://github.com/knpwrs/nextjs-skew-recovery-bug To Reproduce Run npm run build Run npm start Open http://localhost:3000 and make sure the browser deve...

arctic gyro May 15, 2025, 8:45 AM

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Thanks - that's really useful 🙂

#[Error: Failed to find Server Action "{ID}"