Hi Donald,
Did you use a Open SSH different private/public key for your dev and your prod environments?
And in Adobe Experience Cloud (AEC) for Adobe Analytics triggers authentication, the key is correctly entered as you did for dev environment?
Perhaps there is a mislead in the key entered in AEC ?
Sorry I am not skilled yet with Pipeline AEC key issues, but I wonder because of your message error "invalid key".
Regards
J-Serge