scripts-blender/addons/asset_pipeline_2/merge/transfer_data/transfer_functions.py

@@ -564,6 +564,10 @@ def transfer_shape_key(
         ]
         val = mathutils.Vector(sum(np.array(vals_weighted)))
         sk_target.data[i].co = vert.co + val
+
+    if source_obj.data.shape_keys is None:
+        return
+
     fcurves = find_drivers(
         source_obj.data.shape_keys,
         'key_blocks',