HTTP::Throwable::Role::Status::ExpectationFailed - 417 Expectation Failed
The expectation given in an Expect request-header field could not be met by this server, or, if the server is a proxy, the server has unambiguous evidence that the request could not be met by the next-hop server.
Stevan Little <firstname.lastname@example.org>
Ricardo Signes <email@example.com>
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