Status codes

Error Pages has a dedicated page for each of these codes. Request one with /{code} or /{code}.html. Titles are shown here in English; the pages exist in every enabled language.

Code	Title
400	Bad request
401	Sign-in required
403	Access denied
404	Page not found
405	Method not allowed
407	Proxy authentication required
408	Request timeout
409	Conflict
410	Gone
411	Length required
412	Precondition failed
413	Payload too large
416	Range not satisfiable
418	I’m a teapot
429	Too many requests
500	Internal server error
502	Bad gateway
503	Service temporarily unavailable
504	Gateway timeout
505	HTTP version not supported

Named pages

Page	Path	Status sent	English title
Internal	/internal.html	403	Available internally only
Maintenance	/maintenance.html	503	This website is temporarily unavailable

The internal page tells visitors that a service can only be reached from the internal network. The maintenance page is described under Maintenance mode; while that mode is on, it also replaces the 5xx pages.

Other codes

A 4xx or 5xx code without its own page uses the text of its class and still shows the real code:

Codes	Title
Other 400 to 499	Client error
Other 500 to 599	Server error

Anything else, such as /foo or /200, shows the default page (DEFAULT_PAGE).

Status theme: where the problem is

The status theme draws a chain of You, Browser, Network and Host and marks the failing link in red. Each code blames one link:

Link	Codes
Host	every 5xx, 404, 409, 410, 412 and the maintenance page
Network	407, 429 and the internal page
Browser	every other 4xx

Languages

Pages exist in German (de), English (en), Polish (pl) and French (fr). The language is chosen from the ?lang= parameter, then the visitor’s saved choice, then the browser’s Accept-Language header, then DEFAULT_LANGUAGE. Only languages listed in LANGUAGES are offered.