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The grid (core) ยท console.warn

licence key is not valid for {host}; it covers {domains}. The grid will render with a watermark.

Printed by The grid (core), prefixed [lattice], since 1.0.1.

Warnings referencelicence.domain

Identifier
licence.domain
Raised by
The grid (core)
Since
1.0.1

What happened

The key is genuine and is bound to particular domains, and this page is served from another one. It is checked before the signature deliberately: "this key is not for this domain" tells the reader what to do, where a signature failure does not. localhost is always accepted.

The fix

Use a key covering this domain, or serve the application from one of the domains listed in the message. The host compared is the full domain name.

Reference

Covered in full at the API reference.