how the fuck did that work the last time?

eive_tmtc/tmtc/payload/ploc_mpsoc.py

@@ -751,6 +751,7 @@ def handle_mpsoc_data_reply(action_id: int, pw: PrintWrapper, custom_data: bytea
         num_elements = struct.unpack("!I", custom_data[current_idx : current_idx + 4])[
             0
         ]
+        current_idx += 4
         elem_names = []
         elem_attrs = []
         elem_sizes = []