vercel/next.js / errors / nonce-contained-invalid-characters.mdx
The React Framework
nonce-contained-invalid-characters.mdx
title: nonce contained invalid characters
Why This Error Occurred
A request to your Next.js application contained a Content-Security-Policy
header with a script-src directive and nonce that contains
invalid characters (any one of <>& characters). For example:
'nonce-<script />': not allowed'nonce-/>script<>': not allowed'nonce-PHNjcmlwdCAvPg==': allowed'nonce-Lz5zY3JpcHQ8Pg==': allowed
Possible Ways to Fix It
We recommend using a randomly generated UUID for your nonce.
Learn more about how to use nonces with Next.js in our Content Security Policy docs.
Useful Links
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