Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 35348b0e589034a722963f49427d3235e8db52b70711b6f412a5c422ac4c34e6:80:20
   |
80 |         let item <- self.listing.purchase(
   |                     ^

error: pre-condition failed: listing has already been purchased
   --> 4eb8a10cb9f87357.NFTStorefront:243:16