Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 132bc0328b4116f9b7f0edcf3b1250feabcc1ba724847527f202af2af3e7cc06:80:20
   |
80 |         let item <- self.listing.purchase(
   |                     ^

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