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: --> c49b4fb94e54d553f7e672ee70f1d0f8e6d46661b036df6d486128ec04d8d0a4:79:20 | 79 | let item <- self.listing.purchase( 80 | payment: <-self.paymentVault 81 | ) | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: pre-condition failed: listing has already been purchased --> 4eb8a10cb9f87357.NFTStorefront:271:16 | 271 | self.details.purchased == false: "listing has already been purchased" | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^