Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> 32914b28586e003a51c7944034c41c6ccf47302a2a28bb227a410af3a4f5a1ab:80:20
   |
80 |         let item <- self.listing.purchase(
   |                     ^

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