dont have prisma cant see it cant convert it can you like export it to like an obj 3mf fbx gltf or any one that can be imported to blender?
Try a easy converter
like what
A converter to turn to fbxs
every fbx converter doesnt support prisma heck every converter doesnt support prisma
Just try
i tried 20 websites
jack squat from all of them
Have you tryed file remameing. .prisma to .fbx will work
i tried once with the pbbv one it didnt work