This Session's transaction has been rolled back due to a previous exception during flush. To begin a new transaction with this Session, first issue Session.rollback(). Original exception was: (psycopg2.errors.ForeignKeyViolation) insert or update on table "mall_product_snapshots" violates foreign key constraint "mall_product_snapshots_product_code_fkey" DETAIL: Key (product_code)=(4K-13675) is not present in table "product". [SQL: INSERT INTO mall_product_snapshots (mall, item_code, product_code, name, path, raw_json, fetched_at, created_at, updated_at) VALUES (%(mall)s, %(item_code)s, %(product_code)s, %(name)s, %(path)s, %(raw_json)s::JSONB, %(fetched_at)s, %(created_at)s, %(updated_at)s) RETURNING mall_product_snapshots.id] [parameters: {'mall': 'rakuten', 'item_code': '4K-13675', 'product_code': '4K-13675', 'name': None, 'path': None, 'raw_json': '{"manageNumber": "4k-13675-bs", "itemNumber": "4K-13675", "itemType": "NORMAL", "title": "\\u53d6\\u66ff\\u30c9\\u30a2\\u30af\\u30ed\\u30fc\\u30b6\\u ... (8524 characters truncated) ... eatures": {"display": true, "categoryPageViewMode": "GALLERY"}}]}}], "created": "2020-05-16T16:46:05+09:00", "updated": "2024-03-05T14:16:59+09:00"}}', 'fetched_at': datetime.datetime(2026, 7, 23, 4, 19, 5, 443639), 'created_at': datetime.datetime(2026, 7, 23, 4, 19, 5, 443645), 'updated_at': datetime.datetime(2026, 7, 23, 4, 19, 5, 443647)}] (Background on this error at: https://sqlalche.me/e/20/gkpj) (Background on this error at: https://sqlalche.me/e/20/7s2a)