Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 632b164ae05a93ca6dc093d560be2258d7baeba3ddf2b43bb6b7292ba33c7772:80:20
   |
80 |         let item <- self.listing.purchase(
   |                     ^

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