Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> cbdb5e94cd535957c3d22385aba6521f4d992b0860043ae9edec93e6218c5fce:80:20
   |
80 |         let item <- self.listing.purchase(
   |                     ^

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