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This is an unmaintained snapshot of the Astro v4 docs. View the latest docs.

Astro.response.headers must not be reassigned.

AstroResponseHeadersReassigned: Individual headers can be added to and removed from Astro.response.headers, but it must not be replaced with another instance of Headers altogether.

What went wrong?

Section titled What went wrong?

Thrown when a value is being set as the headers field on the ResponseInit object available as Astro.response.

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