next-start-serverless.mdx
title: 'Using next start with target not set to server'
Why This Error Occurred
Next.js can only handle running a server when the target is set to server (this is the default value). A serverless build, for instance, has no handler for requests–this is usually implemented by a hosting provider.
Possible Ways to Fix It
Use a different handler than next start when testing a serverless production build, otherwise use next dev.
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