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: --> ace392e645cbb84f35941920975dea65717f88171d3880ae508e69b21729ce87:73:20 | 73 | let item <- self.listing.purchase( 74 | payment: <-self.paymentVault 75 | ) | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: pre-condition failed: listing has already been purchased --> 4eb8a10cb9f87357.NFTStorefront:243:16 | 243 | self.details.purchased == false: "listing has already been purchased" | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^