rsnext/errors/next-export-serverless.md

Using next export with target not set to server

Why This Error Occurred

Next.js can only handle exporting 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

Change target to server, run next build, then run next export again.