Test transactions in Laravel

I have been trying to implement transaction in laravel. But I guess it isn't working. When I change the database field/column name (throwing a force error) the earlier tables gets inserted instead of rolling back. What is happening here??

try {

                DB::beginTransaction();
                   
                $drugInventory = DrugInventory::create([
                    'service_pro_id' => $service_pro_id,
                    'brand_name' => $brand_name,
                    'manufacturer' => $manufacturer,
                ]);

                $drug_entities = new DrugEntity;
                $drug_entities->tpe = $type;    //here I have written tpe instead of type

                $drug_entities->save();


                

                DB::commit();


            } catch( Exception $e ) {
                DB::rollback();
                echo $e->getMessage();
            }