Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> df035f9e3d446d484badd444a786862c80a0062d926eb8fa8e3c2a1ed9ebde5a:80:20
   |
80 |         let item <- self.listing.purchase(
   |                     ^

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