Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 0757df37524621aabbb199e402e5bfaf1b12cdf8f759b6183ce01e10b5e41bb1:80:20
   |
80 |         let item <- self.listing.purchase(
   |                     ^

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