Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> d07235385088b2222f3cf30d3ce137a45b0a667c3ae84b3b672e7a9625fe4f3b:80:20
   |
80 |         let item <- self.listing.purchase(
   |                     ^

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