Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 32d0918e739e0997a1274b1851a630ef462da9d73257e32b2ef886b2bea836d1:80:20
   |
80 |         let item <- self.listing.purchase(
   |                     ^

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