Cloudflare error codes

This error indicates that an attempt was made to modify a restricted HTTP header. You are trying to modify an HTTP header that Request Header Transform Rules cannot change.

This error indicates that the header value is not valid. The added/modified header value is too long or it contains characters that are not allowed.

This error indicates a rendering issue. This error typically occurs when a Cloudflare Worker encounters a runtime JavaScript exception.

This error indicates that a Cloudflare Worker has exceeded its CPU time limit or memory limit. A Cloudflare Worker exceeds a CPU time limit. CPU time is the time spent executing code (for example, loops, parsing JSON, etc). Time spent on network requests (fetching, responding) does not count towards CPU time.

This error indicates that the email address you are trying to add is already taken in the system. This error can occur if an email has been added with some variation of the email you're trying to add. For example, [email protected] and [email protected] will be treated the same in our system.

This error indicates that access is denied because your IP address has been banned. A Cloudflare customer blocked traffic from your client or browser.

This error indicates that the number of requests queued on Cloudflare's edge exceeds the limit. There are too many requests queued on Cloudflare's edge that are awaiting process by your origin web server. This limit protects Cloudflare's systems.