15 lines
794 B
Markdown
15 lines
794 B
Markdown
# Beta Middleware Used
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#### Why This Error Occurred
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[Middleware](https://nextjs.org/docs/advanced-features/middleware) was beta in versions prior to `v12.2` and not yet covered by [semver](https://semver.org/).
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#### Possible Ways to Fix It
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You can continue to use Middleware in versions prior to `v12.2`. However, you will need to make changes to upgrade to newer versions.
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If you're using Next.js on Vercel, your existing deploys using Middleware will continue to work, and you can continue to deploy your site using Middleware. When you upgrade your site to `v12.2` or later, you will need to follow the [upgrade guide](https://nextjs.org/docs/messages/middleware-upgrade-guide).
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### Useful Links
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- [Middleware Upgrade Guide](https://nextjs.org/docs/messages/middleware-upgrade-guide)
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