fixup

Author: bealdav

label_wizard/wizard/label2print.py

@@ -89,7 +89,17 @@ def generate_label(self):
                 if data4print:
                     model = data4print[0][0].browse(False)
                     content_params = {"with_price": rec.with_price}
-                    return model._get_zebra_labels(data4print, content_params)
+                    method = getattr(model, "_get_zebra_labels")
+                    if method:
+                        return method(data4print, content_params)
+                    else:
+                        raise UserError(
+                            _(
+                                f"Model {model._name} has no attribute _get_zebra_labels."
+                                "\nConsider to install 'label_helper' module or"
+                                " implements your own behavior in your custom module"
+                            )
+                        )
         return {"type": "ir.actions.act_window_close"}
 
     @api.model