Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 705807205e54cd382177f135d0a34f48db7aa471d3ada638ffb4e9c73656811c:80:20
   |
80 |         let item <- self.listing.purchase(
   |                     ^

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