Transaction

[Error Code: 1101] error caused by: 1 error occurred:
	* transaction execute failed: [Error Code: 1101] cadence runtime error: Execution failed:
   --> a5ad79183dc93c33c1d1c1c97b88006486a51f0a2946d368e9cc78981731240c:175:20
    |
175 |         let item <- self.listing.purchase(
176 |             payment: <-self.paymentVault,
177 |             commissionRecipient: self.commissionRecipientCap
178 |         )
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: pre-condition failed: listing has already been purchased
   --> 4eb8a10cb9f87357.NFTStorefrontV2:345:16