CODE_ERROR

There is an error in the cadence code of this transaction.

[Error Code: 1101] error caused by: 1 error occurred: * transaction execute failed: [Error Code: 1101] cadence runtime error: Execution failed: --> e978dafcb8b11441c7f37714110da7bdb1e6337f16ad8b38f5305915e53124e6:72:36 | 72 | let item <- self.listing.purchase( | ^ error: pre-condition failed: listing has already been purchased --> ccf47e1c6ad2d2bd.NFTStoreFree:138:16