Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> fbcdbcc7be725f467bb294f20afe460820f1c7b75aa190c82b5b8b7c813b7c6a:80:20
   |
80 |         let item <- self.listing.purchase(
   |                     ^

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