Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 582e4a1e927d1e9d80e48b3205bca6f3febce53182238b71bae1fe24e0928cfd:80:20
   |
80 |         let item <- self.listing.purchase(
   |                     ^

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