Hi Martijn,
Try clean the deployment directory in Mendix Studio Pro, then try to build the application again.
Hope it helps!
Thanks & Regards,
Manikandan K
Hey Martijn,
As the error says, there is an issue with the context object which is used by the document template.
Somehow template is receiving 2 values of MendixBinary attribute for the same guid object which shouldn't be the case.
We need more explanation on how step 1 and step 2 microflows were designed and how the context object is used within the template.
Regards,
Naman