Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 82d9cf0846e5c524bcccd4c211b2966f57001fd50523f515f82862884171371f:80:20
   |
80 |         let item <- self.listing.purchase(
   |                     ^

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