Fixed prepagate_field issues

Author: enicolasgomez

netpyne_ui/netpyne_geppetto.py

@@ -879,16 +879,18 @@ def deleteParam(self, model, label):
                 # side effect on other rules
                 if "popParams" in model:
                     self.propagate_field_rename("pop", None, label)
-                    self.propagate_field_rename("cellModel", None, rule['cellModel'])
-                    self.propagate_field_rename("cellType", None, rule['cellType'])
+                    if 'cellModel' in rule:
+                      self.propagate_field_rename("cellModel", None, rule['cellModel'])
+                    if 'cellType' in rule:
+                      self.propagate_field_rename("cellType", None, rule['cellType'])
 
                 elif "stimSourceParams" in model:
 
                     self.propagate_field_rename("source", None, label)
                 elif "synMechParams" in model:
                     self.propagate_field_rename("synMech", None, label)
             return True
-        except Exception:
+        except Exception as e :
             logging.exception(f"Error while deleting parameter: {label}")
             return False