I spend countless hours trying to debug webhook issues only to find the error should have been easily caught and reported back correctly. It seems the only issue that comes back is "Processing webhook: unhandled error. Please contact support@aha.io for more information." We should not have to contact Aha support if the error is a simple as a failed authentication as was the problem in the attached screenshot. I think development should take some time and try to catch some common errors seen with integrations.
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