Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 1c049dcf22ad2b76067f495f0d1d0580fd2fb1fc38426f9cce72900d6e123ac8:80:20
   |
80 |         let item <- self.listing.purchase(
   |                     ^

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