Transaction

[Error Code: 1101] error caused by: 1 error occurred:
	* transaction execute failed: [Error Code: 1101] cadence runtime error: Execution failed:
   --> 8cbf22cebb5240a79ba5db046ca13a4c5133ae858b63ddf6884d429ff5d69c1d:103:20
    |
103 |         let item <- self.listing.purchase(
    |                     ^

error: pre-condition failed: listing has already been purchased
   --> 4eb8a10cb9f87357.NFTStorefrontV2:322:16