Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 46c8e12f507e933302993c9dd13e74b01e1cbadb25ab586065df9580b1017d1b:80:20
   |
80 |         let item <- self.listing.purchase(
   |                     ^

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