Error Codes
Here are some explanations for error codes you may encounter. Please let us know if you think you encountered a bug.
403 - Forbidden
You are trying to access a page that you don’t have permissions for. E.g. trying to edit an entity as user with a read only group. The user interface shouldn’t provide you with links to sites that are restricted for your user. Maybe you used an obsolete link or bookmark.
404 - File not found
The site you requested cannot be found. Maybe you used an obsolete link or bookmark.
418 - I’m a teapot
You see this message if you tried to access an entity with an id that doesn’t exist (anymore). Maybe you used an obsolete link or bookmark.