An item with the same key has already been added (Un élément avec la même clé a déjà été ajouté.)

Hello, im pretty new to this so i would apreciate some help…

So i wanted to try the Multi-User Experiences with Azure Spatial Anchors Project on Marketplace, followed the tutorial, added everything for azure spatial anchors on the blueprints, but when i tried to package for hololens, im stuck at : UATHelper: Packaging (HoloLens): ERROR: System.ArgumentException: An item with the same key has already been added.

I tried pretty much everything on the forums, i got no double plugins, no double .target files, tried to migrate everything on another project… nothing works