bad_request

An Http_Error with status 400, for when the request is malformed or its content is invalid. format and args make the detail text as tprint does, in the temporary allocator.

error := bad_request("the field % is empty", "name");
assert(error.status == 400 && error.detail == "the field name is empty");

bad_request :: (format := "", args: ..Any) -> Http_Error