resetEntityManager example

'success' => true,
                    'operation' => 'delete',
                    'data' => $this->delete($id),
                ];
                if ($this->getResultMode() === self::HYDRATE_ARRAY) {
                    $results[$key]['data'] = Shopware()->Models()->toArray(
                        $results[$key]['data']
                    );
                }
            } catch (Exception $e) {
                if (!$this->getManager()->isOpen()) {
                    $this->resetEntityManager();
                }
                $message = $e->getMessage();
                if ($e instanceof ValidationException && $e->getViolations() instanceof ConstraintViolationList) {
                    $message = implode("\n", $e->getViolations()->getIterator()->getArrayCopy());
                }

                $results[$key] = [
                    'success' => false,
                    'message' => $message,
                    'trace' => $e->getTraceAsString(),
                ];
            }