actually swap to hasattr

nwbinspector/checks/icephys.py

@@ -6,5 +6,5 @@
 @register_check(importance=Importance.BEST_PRACTICE_VIOLATION, neurodata_type=IntracellularElectrode)
 def check_intracellular_electrode_cell_id_exists(intracellular_electrode: IntracellularElectrode):
     """Check if the IntracellularElectrode contains a cell_id."""
-    if getattr(intracellular_electrode, "cell_id", "") is None:  # Will only be None with PyNWB>=2.1.0
+    if hasattr(intracellular_electrode, "cell_id") and intracellular_electrode.cell_id is None:
         return InspectorMessage(message="Please include a unique cell_id associated with this IntracellularElectrode.")