Yes, it has to match your ping's message ID, or for whatever ping you have forwarded (which didn't show in your log). So it is either a bug in BS (although older version) or there's something in your code.

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Okay, so I've been gone a while - but hey, meanwhile online translators have gotten better:

Ce n'est pas ma faute. Blâmer vous-même.

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Ne me blâmez pas. Blâment votre individu.