Transaction

[Error Code: 1101] cadence runtime error Execution failed:
  --> def99a8743e430c011f521903fe44412c9df48bda1bd8fb2524b225d7b0482a8:80:20
   |
80 |         let item <- self.listing.purchase(
   |                     ^

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