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: --> 903450663f413130139da72f94912b63943600bd7597f2782e8420e99d246e8b:80:20 | 80 | let item <- self.listing.purchase( 81 | payment: <-self.paymentVault 82 | ) | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: pre-condition failed: listing has already been purchased --> 4eb8a10cb9f87357.NFTStorefront:243:16